9:47 a.m.: This is first time I have checked my iPhone all day. I wanted a chance to use my i760 a bit before I touched the iPhone. Yep, the iPhone now shows 20% of battery remaining. I have no idea when, in the past 10-11 hours, the battery got that low. Usage stats are as follows:

• Usage since last full charge 6 hours, 10 minutes
• Standby since last full charge 2 days, 1 hour
• Call time current period 1 hour, 36 minutes
• Lifetime call time 13 hours, 57 minutes
• Data sent 746 KB
• Data received 3.1 MB

Now, here's what's a bit interesting/surprising: As you might recall, I fully charged both my iPhone and my i760 (with the extended OEM battery) and unplugged both devices within a minute of each other on Thursday morning (two days ago). As I just mentioned, the iPhone is showing only 20% battery remaining, but (according to the iPhone) I've used it for 6 hours and 10 minutes since the last full charge. The i760 doesn't give me an equivalent statistic. However, the only thing I have "used" my i760 for prior to this morning was to receive e-mails via push--I haven't even looked at them, though. This morning, I wanted to use a bit of my call time on the i760 so I could have a better comparison to the iPhone. Thus, I made a 27 minute phone call (using a Bluetooth headset, which is what I have doing with my iPhone). Now, when I look at the i760's battery, it too is showing only 20% battery remaining (I'm getting this stat through phoneAlarm's battery meter--btw, although I've got pA installed, I turned off all repeating alarms so I would have a fair comparison with the iPhone). In other words, with only 1/3 of the talk time on the i760, I have the same battery reading as with the iPhone, which not only has had 3 times as much talk time but a lot more usage time. Consequently, I might have to eat my words about the i760 getting better battery life than the iPhone (at least when the iPhone has 3G turned off). Of course, the comparison is not truly fair because the i760 has EVDO turned on whereas the iPhone has 3G turned off. However, this does suggest to me that if I keep 3G turned off, I should be able to get as much usage (if not more) out of the iPhone has I can get on the i760.

I'm going to try to avoid using the iPhone for calls while I work today and might try making another hour of calls on the i760 just to see where the batteries stand after equal talk/call time. Should be an interesting experiment. I wonder whether I can even get another hour of talk time out of what is left of the i760's charge. Hmmm.......

10:27 a.m.--I'm in my office trying to get a project done today when I realize--hey, I've got free weekend calling on my i760, I might as well just call my office landline and leave the call connected while I work so I can try to equal the 1 hour 36 minutes of talk time I got on the iPhone. I place the call from my i760 to my office landline and leave both phones on speaker while I work.

11:11 a.m.--I check the i760. It's still connected to my office landline (after 44 minutes). However, at some point, the i760 shut off its Bluetooth radio to conserve power and generated a lower battery warning. phoneAlarm shows only 10% of the battery left.

11:14 a.m.--My i760 generates a battery "very low" warning and turns off the cellular phone radio, thereby disconnecting the call. So, both the iPhone and i760 were last charged at the same time (roughly 2 days and 2 1/2 hours ago). However, whereas with the iPhone I got 1 hour and 36 minutes of call time (not to mention 6 hours and 10 minutes of total usage), with the i760 I only got 1 hour and 15 minutes of call time and far, far less than 6 hours and 10 minutes of total usage). Based on this data, I am forced to confess that, at least with 3G turned off, the iPhone's battery life is at least as good (if not better) than the i760's battery life (with both devices having Wi Fi and vibrate turned off but having Bluetooth turned on 24/7).

12:22 p.m.--I check on the iPhone. It now is generating the 10% battery remaining warning (more than an hour after I got a similar warning from the i760). Final stats are as follows:

• Usage since last full charge 6 hours, 25 minutes
• Standby time since last full charge 2 days, 4 hours
• Current period call time 1 hour, 36 minutes
• Lifetime call time, 13 hours, 57 minutes
• Data sent 766 KB
• Data received 3.1MB

Oh, I just realized that my iPhone has been set to vibrate since 5:30 last night. Thus, I probably would have eeked out another 1/2 hour perhaps if the iPhone had not been set to vibrate.

In any event, I plug both the i760 and the iPhone into my Dell to charge. Total e-mails received since both devices were fully charged: 102.

4:34 p.m.--Both the iPhone and the i760 are fully charged so I unplug them. I make a couple of very short calls (5 minutes or less) on the iPhone. Both calls placed from my office. No problems with either call.

5:10 p.m. (appx.)--I turn off the iPhone's Location service. We'll see to what extend Location service uses the battery. Then, I think the only other variables that will remain to be tested are Bluetooth and push e-mail. After that, I get to apply the 2.0.1 update!

EDIT (8/18/08 @ 9:18 a.m.): Total e-mails received today--only 9, very slow e-mail today. So, push probably was a better setting than pull for today.

__________________
-Jay
The Fine Print:Nothing in this post (or any of my other posts) is intended to constitute legal advice or the establishment of an attorney-client relationship. For purposes of this forum, I'm just another nerd like you. :-)

Jay, one of the things that is always going to bog down a comparison between your iPhone and the i760 is that the screen on the iPhone is twice as big, with twice the resolution. So, it is obviously going to draw more power.

But, that aside, until the time comes that you stop doing comparisons and just simply enjoy the iPhone for what it is rather than what it isn't, you won't begin your real iPhone experience and won't be satisfied. Every mobile phone PDA has its positives and negatives. There are, frankly, things better about a BB and about a Treo than on the i760, or on the iPhone. And vice versa. A person just has to say "I value what this phone offers more than I value what the other phone offers" and then be done with it.

__________________
Pastor Tim Satryan
Communicating the Good News!
Visit my website - WILMINGTON first assembly of God

Amen . The irony is that the same tinkering abilities that made WM usable will serve the iPhone as well. So the bottom line is what the base unit is about.

I completely understand what you're saying, Tim. Keep in mind that I started this blog thread simply to chronicle my experience while I tried out the 3G iPhone. Thus, it was natural for me to compare the iPhone to what I was used to, namely the i760. I quickly perceived that I was getting substantially less battery out of the iPhone than I had been getting out of my i760. Recognizing that perception and reality are not always the same, I figured I should do some qualitative experiments to see whether my perception was correct. Much to my surprise, I discovered today that my perception was not accurate, at least when I turned 3G off. With 3G off, my iPhone actually lasted longer than my i760.

At this point, my decision is going to come down to two factors: (a) whether AT&T's reception is adequate for my needs and (b) whether the iPhone's battery is adequate for my needs. Originally, I was disappointed that I could barely get a day out of the iPhone's battery with only moderate (for my standards) usage. This gave me concern as to whether the iPhone's battery would be sufficient for me on days when I had heavy (for my standards) usage. With 3G, vibrate, and Wi-Fi off, I don't have this concern. Thus, now, my focus is really going to be on the coverage issue, but even that has gotten better since I turned 3G off.

I still plan on tracking battery usage under different conditions (I turned the Location service off today). My hope is that this will provide others with some quantitative data that they can use to adjust their iPhones (when needed) to extend battery life. For example, I am curious the extent to which turning of Location service saves power. Likewise, I also want to know which is the bigger battery drain--Wi Fi or Location.

Rest assured that I'm already enjoying the beauty that is the iPhone. If AT&T had better coverage in Phoenix (especially 3G coverage), you would have already converted me.

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-Jay
The Fine Print:Nothing in this post (or any of my other posts) is intended to constitute legal advice or the establishment of an attorney-client relationship. For purposes of this forum, I'm just another nerd like you. :-)

Jay,

I've enjoyed reading your blog. In fact I found it today and read it over the last few minutes on my iPhone. I'm curious to see what you find by turning the location services off.

Thanks. I've enjoyed writing it and am glad some people are finding it helpful.

As to the Location service, I had something interesting happen today. I am 99.9% positive I turned it off today. This afternoon, I went to use an app called Showtimes, which looks up times of movies. This was the first time I used the app. When I started the app, it asked me if I wanted to use my current location; I said "yes." It immediately came up with the name of the theater that was closest to where I was. I thought that was a bit odd so I checked the Location service setting--sure enough, it was on. I am thinking that the app turned the Location service on, but I'm not sure whether that's the case. I did turn it off, but did not try Showtimes again. I'll have to play with it tomorrow.

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-Jay
The Fine Print:Nothing in this post (or any of my other posts) is intended to constitute legal advice or the establishment of an attorney-client relationship. For purposes of this forum, I'm just another nerd like you. :-)

I've seen the same behavior. I believe apps that can use the location service have the ability to turn it on when requested if it is in the off state. Try it with Google Maps and you'll see the same behavior.

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It's working for me, there must not be anything wrong!

Too bad those apps don't automatically turn Location service off.

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-Jay
The Fine Print:Nothing in this post (or any of my other posts) is intended to constitute legal advice or the establishment of an attorney-client relationship. For purposes of this forum, I'm just another nerd like you. :-)

I am actually writing this report on Monday, August 18, which is day 20. I wasn't home much of yesterday and didn't have access to a computer most of the day as I spent the better portion with some friends who were visiting from out of town.

Yesterday, I only made two calls from the iPhone; both were brief. I did use the iPhone briefly to look up the time of a movie using an app called Showtimes. As I mentioned in a post yesterday, simply opening that app and telling it to use my current location caused the Location service to be turned on. I did turn it off afterwards, though. I also used the iPhone to take about 4 or 5 photos and to e-mail those photos (one at a time) to my friends. Thus, I probably sent more data than I have in the past.

Yesterday, I received a total of only 14 e-mails so, again, push e-mail was probably a good thing for yesterday. In fact, what I'm thinking I need is a program that will automatically set the iPhone for push during business hours on weekdays, pull (like every 15-30 minutes) on weekends, and turn off both pull and push at night (while I'm sleeping).

All my music is stored on an external hard drive attached to my 24" inch iMac. However, I've been syncing my iPhone with my MacBook, figuring I would want the ability to sync when I'm way from home. Thus, last night I installed on both the iMac and the MacBook a program called TuneRanger, which is supposed to sync iTunes data among multiple computers (it actually comes with a license that allows it to be used on 3 computers so if it works with my iMac and MacBook, I might try the third license on my wife's computer). I have over 10,000 songs so it's taking awhile to sync over WiFi. Moreover, it froze at midnight last night so I had to re-start ths syncing process this morning. When I left the house, it had 8,000+ songs left. Hopefully, by the time I get home this evening, all my music will also be on my MacBook (if the internal hard drive is large enough) so that I then can actually sync some tunes to my iPhone. FWIW, TuneRanger works with both Windows (Vista and XP) and OS X and even allows syncing between a Windows machine and an OS X machine. The cost of the program is $30, but I got $20 back from Fry's rebates. I'll let you all know how it goes.

__________________
-Jay
The Fine Print:Nothing in this post (or any of my other posts) is intended to constitute legal advice or the establishment of an attorney-client relationship. For purposes of this forum, I'm just another nerd like you. :-)

9:46 a.m.--The battery indicator suggest I have roughly 1/3 to 25% battery remaining. It would be nice if I could make it to this afternoon (48 hours) without having to recharge, even though I didn't have much talk time this weekend. Current stats are as follows:

• This is very strange. Right now, it's showing a blank line for Usage since last full charge and for Standby time since last full charge.
• Current period call time is 2 minutes
• Lifetime call time shows 14 hours, 18 minutes
• Data sent is 585KB
• Data received is 1.7MB

Oh, I think I just figured out why it's not showing any Usage or Standby time since last full charge. On Saturday night, I was playing with an app called Editor, which allows you to put a chef's hat, mustache, and cigar on a photo. When I followed the directions to save the photo, it actually ended up rebooting the iPhone. I'm willing to be that the reboot caused the first two stats to be thrown out of wack. That's really too bad. I'll have to start the Location services test all over.

FWIW, currently my i760 is showing 65% battery left (per phoneAlarm). Of course, I haven't used it all since Saturday afternoon (other than it receiving the few e-mails).

4:57 p.m.--My iPhone gives me the Low Battery--20% of Battery Remaining warning message. Stats are as follows:

• Usage --
• Standby--
• Current call time 9 minutes
• Lifetime 14 hours, 25 minutes
• Data sent 796KB
• Data received 2.4MB

Due to Saturday's reboot of the iPhone, I don't have any usage or standby figures so I really don't know how to guage this go around other than I know I last charged at 4:34 p.m. on August 16, which means I've now gotten more than 48 hours of standby time from the iPhone. I just wish I knew how much actual usage I have gotten.

7:32 p.m.--I'm still at the office but ready to go home. It's been a long day. I'm tired and hungry. I just took a quick peak. I still have not received the 10% low battery warning, but I suspect I'll get it on my ride home while I talkety talk with my wife or parents. i760 shows 55% battery life left, but I haven't used it at all since the last charge.

8:07 p.m.--The iPhone's 10% battery remaining error message popped up so I'll definitely need to charge the iPhone before I go to bed tonight. The good news is that I talked on the iPhone all the way to the mall near my house and at the mall without a dropped call i still need to do more testing in the problem area near my house.

EDIT (8/19/08@ 12:05 p.m.): Total e-mails received on Day 20=72 (wow, yesterday was a very busy e-mail day!). Total e-mails received since last full charge=91 (remember, I still have push turned on).

__________________
-Jay
The Fine Print:Nothing in this post (or any of my other posts) is intended to constitute legal advice or the establishment of an attorney-client relationship. For purposes of this forum, I'm just another nerd like you. :-)

8:10 a.m.--The iPhone is fully charged and I unplug it from my MacBook.

11:08 a.m.--I'm at my office (actually inside my office), and I friend calls. We talk for 52-55 minutes. The call never drops. Of course, I'm talking on EDGE, not 3G. The battery icon appears to read 100%.

12:08 p.m.--I just pulled the iPhone from the belt holster to check on something. As I grabbed it, I went to hit the Home button to turn it on; however, as I hit the Home button, I saw the normal locked screen quickly turn to black. It was as though it was already on and then hitting Home turned it off. Now I need reboot the darn thing.

1:58 p.m.--Okay, that was a false alarm. As soon as I was done typing my 12:08 p.m. message, I left for lunch. As I started to walk out the door, I picked up my iPhone to reboot it. When I hit the Home button, it suddenly sprang back to life--no reboot. I've already used the iPhone for 1 hour and 52 minutes today, with 1 hour, 31 minutes of that being talk time. Somehow, I've also managed to send 1.1 MB of data, which is odd because I haven't sent an e-mails this morning or used Safari. Drat! Could I have forgotten to reset my usage stats this morning? Yes, I think that is what happened. Therefore, all my data stats will be off. My call time also will be inflated by 9 minutes. Still, I'm doing well so far today.

8:30 p.m.--Sometime today, my wife's iPhone gave her the 20% low battery warning, but I'm not sure when. Around 6:30-6:45 this evening--while she was talking to me on her iPhone, she got the 10% low battery warning. Again, I'm not sure of the precise time. She didn't use her iPhone after she finished that call. Here are her usage stats now:

• Usage since last full charge 5 hours, 53 minutes
• Standby since last full charge 4 days, 12 hours
• Current Period Call Time 32 minutes
• Lifetime call time 4 hours, 9 minutes
• Data sent 581 KB
• Data received 2.7MB

She has been running with 3G, Bluetooth, and Wi Fi off, but Location Services on. She has Push turned on but gets 1 e-mail per week (if that) on that account.

So, I'll charge her iPhone tonight and also turn off Location Services.

Right now, my iPhone (which was unplugged this morning) reads as follows:

• Usage since last full charge 3 hours, 23 minutes
• Standby since last full charge 12 hours, 28 minutes
• Current Period Call Time 2 hours, 7 minutes (remember, this is inflated by 9 minutes)
• Sent data 1.3MB (again, this inflated because I forgot to reset it this morning)
• Received data 4.2MB (also inflated)

Eyeballing the battery icon, I'd say I have roughly 60-75% batter remaining.

10:21 p.m.--FWIW, my i760, which was last unplugged on Saturday afternoon, now shows only 20% battery left. Of course, I haven't made a single call on it since the last charge, nor have I used it for anything else.

EDIT (8/20/08 @ 10:15 a.m.): Total e-mails received on August 19=62. So, my iPhone is receiving an average of almost 3 e-mails per hour via push.

Tracking my e-mails is turning into a pain so I might stop doing it soon. I think I've got a pretty good idea of how many e-mails I receive on a daily basis. What will probably be the most important test in this regard is not tracking the number of e-mails received but simply turning off Push for a few days.

__________________
-Jay
The Fine Print:Nothing in this post (or any of my other posts) is intended to constitute legal advice or the establishment of an attorney-client relationship. For purposes of this forum, I'm just another nerd like you. :-)

For lack of a better place to put this, I went to use my 6700 today (waiting for eWallet sync) and found that I had to soft reboot the darn thing. AND I HAVEN'T USED IT since the last charge two days ago. Thought you would get a kick out of that one. I'm super glad I have the iPhone now......it, combined with the jawbone 2 and all is well in my world.

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It's working for me, there must not be anything wrong!

8:00 a.m.--My wife's iPhone is fully charged so I unplug it and reset her usage stats. I also turn off Location Services. Thus, she's now running with 3G, Bluetooth, Wi-Fi, and Location services off. I've still got Bluetooth turned on on my iPhone. Most of the time, we both have Vibrate turned off. We both have Push e-mail turned on, but I'm receiving between 40 and 60 e-mails per workday on my iPhone whereas she only receives 1 e-mail per week. We both have the brightness setting set to auto. I don't expect turning off Location Service will greatly improve her battery life, but we'll see.

8:35 a.m.--I peak at my i760, which I haven't used since it was last charged at 4:34 p.m. on Saturday, August 16. It shows a low battery warning and has shut down Bluetooth and the phone radio. Looks like I won't have gotten 4 days of standby time on the i760 even though my wife got 4+ days on her iPhone.

9:59 a.m.--I check the i760. It is dead, dead as a door nail. It won't turn on. So, my wife's iPhone actually lasted longer than my i760--and she actually used her iPhone whereas I did not use the i760 (other than occasionally looking at it to see how the battery life was doing). Two differences, though. First, the i760 had Bluetooth turned on, but my wife's iPhone did not. Second, my i760 was receiving all my e-mails (more than 100) via push whereas my wife's iPhone received only 1 e-mail via Push since the last full charge. I might have to turn Push and Bluetooth off on the i760 and compare it to my wife's iPhone that way to get an apples-to-apples (or Apple-to-Samsung) comparison.

10:00 a.m.--I put the i760 in the cradle to charge.

10:04 a.m.--I haven't looked at or used my iPhone all morning. Time to check the stats:

• Usage since last full charge 4 hours, 18 minutes
• Standby since last full charge 1 Day, 1 hour
• Current Period Call Time 2 hours, 7 minutes (inflated by 9 minutes)
• Lifetime call time 16 hours, 23 minutes
• Data sent 1.4 MB (inflated)
• Data received 4.6 MB (inflated)

Looks like I have about 45% battery remaining. (I sure wish it had a more accurate battery meter). I'm hoping I can make it to tomorrow morning without charging, but I doubt that will be the case. I suspect it will be ready for a charge before I go to bed tonight.

I've made myself an appointment for the Genius Bar tomorrow morning. I'm going to see whether they can test my battery. With my luck, they'll tell me to upgrade to 2.0.2.

BTW, somewhat of a random note, I meant to record this information in one of my previous posts but forgot to do so. When I had 3G turned on, I frequently would notice that the iPhone would get quite warm while I was talking on the phone. However, I haven't experienced this since turning 3G off. Has anyone else noticed their iPhone getting warm to the touch when talking on it? If so, were you using 3G or EDGE?

4:35 p.m.--My iPhone gives me the 20% left/low battery warning. Usage stats are as follows:

• Usage time since last full charge 5 hours, 49 minutes
• Standby time since last full charge 1 day, 8 hours
• Call time current period 2 hours, 22 minutes (inflated by 9 minutes)
• Lifetime call time 16 hours, 38 minutes
• Data sent 1.6 MB (inflated)
• Data received 6.0MB (inflated)

4:36 p.m.--I unplug my i760. It is full charged. Wi Fi and Bluetooth are both off, and I'm going to leave them off.

4:48 p.m.--I'm talking on the iPhone (using my Jawbone 2) while driving home on the SR51 (Piestewa Parkway). Somewhere around the Greenway exit, reception gets awful; I can't understand the other person. Then, the call drops. One more disappointment with AT&T's coverage--this time with EDGE.

6:05 p.m.--My iPhone gives me the 10% low battery warning. So, it dropped 10% in the last hour and a half. I'm not in a place where I can write down the usage stats and I don't even have time to look at them.

9:41 p.m.--I'm now home and am able to give final usage stats for this first charge:

• Usage time since last full charge 7 hours, 4 minutes
• Standby time since last full charge 1 day, 13 hours
• Call time current period 2 hours, 57 minutes (inflated by 9 minutes)
• Lifetime call time 17 hours, 13 minutes
• Data sent 1.7 MB (inflated)
• Data received 6.7MB (inflated)

I'm not sure why the data received jumped 0.7MB in the last 5 hours. I must have received an e-mail or two with a large attachment. I did have vibrate turned on for about an hour, during which I received (but ignored) two phone calls, one voice mail, and a couple of e-mails.

I am disappointed that I still am not able to get 10 hours (heck, not even 8 or 9 hours) of usage on a single charge. Plus the battery still hasn't lasted me 48 hours on a full charge. Tomorrow I go to Apple to have them look at the iPhone. I am really wondering whether I have a bad battery. Tomorrow, I'll shut off either Bluetooth or Push. Anything else I'm missing? I've got Wi Fi, 3G, Vibrate, and Location Services already turned off.

Final e-mail stats to be reported tomorrow morning....Now, I need to charge the iPhone.

EDIT (8/21/08 @ 1:35 p.m.): Yesterday I received a staggering total of 83 e-mails (that's during the 24 hour period of 12:01 a.m. to 11:59 p.m. so it includes part of the time my iPhone was charging). Between charges, I received a total of 83 e-mails. I'm now going to stop tracking my e-mails. It's too much of a pain.

__________________
-Jay
The Fine Print:Nothing in this post (or any of my other posts) is intended to constitute legal advice or the establishment of an attorney-client relationship. For purposes of this forum, I'm just another nerd like you. :-)

7:00 a.m. (appx.)--Even though my iPhone has been connected to my MacBook all night, it's not showing as fully charged. Nope, the MacBook was not asleep. Very strange. However, I need to leave for a meeting. I'll plug it into the car charger to top it off while I drive.

7:46 a.m.--The iPhone is fully charged and I'm at my destination. Time to unplug it. I reset the usage stats and turn Push off.

11:25 a.m.--Time for me to leave for my appointment with the Apple Genius.

11:40 a.m. (appx.)--I explain to the Genius that I have been only getting about 7 hours of usage with Wi Fi, Location Service, Vibrate, and 3G turned off. I tell him that of that 7 hours, only about 2 hours are talk time. I tell him that with 3G turned on, I was getting only about 3 hours of usage and about an hour or so of talk time. He connects the iPhone to a MacBook and runs some diagnostics. He tells me the diagnostics are not showing a problem with the battery but he offers to replace the iPhone anyway (that's great customer service, IMHO). I take him up on his offer. While he is changing out the SIM card, he comments that my Usage time and Standby time are now showing the identical time (4 hours and 7 minutes), which is very odd. I've never had that happen before, but what a good time for it to happen (while I'm at the Apple store). I also ask about the 2.0.2 update. The Genius tells me he has been hearing a lot fewer complaints about 3G service after 2.0.2. He also acknowledges that AT&T's 3G coverage in Phoenix is not as good as it should be. Of course, the replacement iPhone only has the 2.0.0 firmware.

I'm done with the phone swap (after being sure to set my old iPhone to erase all data--which I'm told takes 1/2 hour or so once the process is started). The first thing I notice is that my new iPhone immediately gives me a low battery warning (20% remaining). I browse the Apple store for a little bit, then go grab some lunch, then head back to the Apple store because I realized I meant to buy the Crystal Film Set and forgot. I buy the Crystal Film Set and an 3G iPhone dock for my office. Time to head back to work.

Back at the office, I try to set up Mail for my firm's Exchange server. I run into a problem where it says it cannot connect to my firm's server. I don't have time to mess with it so I tell it to save the settings, figuring I'll come back to it later.

While at my office, I peak at my iPhone. Now it's giving me a message about the certificate on my firm's Exchange server. I tell it to ignore the message, it asks for my password again, and then it again mentions something about the certificate. The next thing I know, it's syncing with my Exchange server. Yippee, all my contacts, calendar, and e-mail are on the new iPhone.

1:10 p.m. (appx.)--The iPhone gives me the 10% low battery warning. Time to start thinking about charging it.

1:14 p.m.--My wife calls me on the new iPhone. It still has 3G turned on. I'm sitting at my desk in my office. About 1 minute (or less) into the call, the call drops. 3G coverage here just sucks!

1:20 p.m.--Time to charge the iPhone. I'm putting it in the 3G dock that I purchased at the Apple store today. I'll let it fully charge before I use it again. While it's charging, I turn on Bluetooth and pair my Jawbone 2.

Hmmm...where should I start my testing this time? I'm inclined to go with my last set of settings before I turned Push off and see how that goes. We'll see.

4:04 p.m.--Just glanced down at the iPhone. It is fully charged. I'm going to let it sit in the charger for another 45 minutes or so (until I need to leave).

5:10 p.m. (appx.)--I unplug the iPhone. I turn off 3G, Wi Fi, Push, and Location Service. A little later (during dinner) I turn off Vibrate. I still have Bluetooth turned on.

5:16 p.m.--I'm on my way to meet my family for dinner, and my wife calls me from her iPhone. We talk during the entire 21-22 minute drive. About 1 minute into the call, the reception is bad and the call drops quickly. I'm pretty sure it dropped on her end. She is leaving my parents' house, and they live in a small valley where even VZW and T-Mobile reception is terrible. So, I'm not going to count this dropped call against AT&T. I call her back and all is good for the remainder of the drive (another 20 minutes or so). For those in Phoenix, my route takes me from 16th Street and Glendale to Camelback and Miller. I drive down Glendale all the way to 64th Street (Invergordon) and take Invergordon to Camelback. My wife drives from Tatum north of Lincoln to Lincoln then east to Scottsdale road then south to Camelback. (I've got 3G turned off and am talking on EDGE the entire trip.)

During dinner, I show off my iPhone to my sister who is in town visiting. I've got a full 5 bars on EDGE. My father, who has the Blackberry Pearl on T-Mobile, only has 2-3 bars. Of course, it still doesn't stop my parents for teasing me about switching to AT&T just because the iPhone is "a very cool toy" (in my words).

9:45 p.m.--I'm at home sitting in my family room. I'm getting between 4 and 5 bars on EDGE. I can't wait to upgrade to 2.0.2 and see whether 3G reception is improved. However, for now, while I continue to test battery life, I'll hold off on the 2.0.2 upgrade--at least for another day or two.

So, tonight I will charge the iPhone using the AC adapter rather than my MacBook. Then, the testing begins again tomorrow.

__________________
-Jay
The Fine Print:Nothing in this post (or any of my other posts) is intended to constitute legal advice or the establishment of an attorney-client relationship. For purposes of this forum, I'm just another nerd like you. :-)

Glad to note you got a replacement phone .........that said here's a real help note>>>>PLEASE charge that battery for a minimum of 8 hours before you do any testing. Make sure the phone is OFF AFTER you plug in the wall charger NOT to a MAC Book !!!!. Then do all your testing FIRST with ALL turned on............then when the battery goes down to 10% charge it for another 6 hours thru the wall charger ONLY and then test it with ALL those "perks" turned off. NOW you will truly have a very fair comparitive reading.
What to turn OFF
1.PUSH
2. 3G
3. Location Services
4. Brightness from Auto to manual about 1/4 on the slider.
5. Vibrate mode.

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Funny it worked.....the last time!!Now I am not sure what was working before they put a hole in my head!!!!

Jay, we've all lithium battery devices before so I'm not trying teach you anything you don't know. As I understand it, the life of the batterys are based on X number of complete cycles, from virtually dead to fully charged and back. And the "keep it fully charged, use it as needed and put it back on the charger" theory doesn't put much of a dent in the life of the battery.

You gave your first iPhone battery quite a workout with several full cycles. Now that you have an iPhone with a new battery that you might keep, have you considered the option of not putting as much wear and tear on that battery in it's early life?

I don't want to spoil any tests that you really want to do. OTOH, we know the battery life sux as does the battery indicator. Could it be time to weigh the option of scientific research versus taking care of your piece?

I don't have a wall charger at my office and the phone was truly almost dead so I had no choice (if I wanted a live phone) but to plug it into the USB port on my Dell monitor (connected to my Dell Optiplex). I need to leave my office at 5:00 today (maybe a few minutes earlier) so I won't have had a full 8 hours of charge. With all that in mind, should I plug it into a wall charger when I get home this evening, let it charge overnight (full 8 hours or more), and then try using it as you have suggested?

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-Jay
The Fine Print:Nothing in this post (or any of my other posts) is intended to constitute legal advice or the establishment of an attorney-client relationship. For purposes of this forum, I'm just another nerd like you. :-)

I've read so much about LiOn batteries that I don't know what to believe any more. My head is just spinning. If the battery runs down to, say, 50% and I then top it off to 100%, does that count as one of the charge cycles? Or, does it count as 50% of a charge cycle? Or, does it not count toward charge cycles at all?

Obviously, I don't want to do such much testing that I use up the life of the iPhone's battery. However, I can't imagine the 3 weeks of testing I've done will do that....will it?

I don't foresee re-doing every test with the new iPhone. I am curious, though, as to whether the replacement iPhone gets better battery life than the old one. To that end, I figured that perhaps I would just run one set of tests under the same condition that I ran with the old iPhone and see how that works out. I then could start moving on to other tests I did not complete, such as turning off BT and Push. Then, I want to upgrade to 2.0.1 or 2.0.2 (maybe just skip 2.0.1 and go straight to 2.0.2?) Of course, I especially want to see whether 2.0.2 helps my 3G coverage issues.

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-Jay
The Fine Print:Nothing in this post (or any of my other posts) is intended to constitute legal advice or the establishment of an attorney-client relationship. For purposes of this forum, I'm just another nerd like you. :-)

Andy,

What about Wi Fi and Bluetooth? Should I turn those off too?

__________________
-Jay
The Fine Print:Nothing in this post (or any of my other posts) is intended to constitute legal advice or the establishment of an attorney-client relationship. For purposes of this forum, I'm just another nerd like you. :-)

Only Wi-Fi, keep BT on as long as the iPhone is on. Please use the wall charger and not any USB ports.
Reasons not to use USB are for another thread and another day. It has to do with Power Management set up by the base OS in some laptops.

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Funny it worked.....the last time!!Now I am not sure what was working before they put a hole in my head!!!!