As a refresher (in case you haven't read Day 7 in awhile), yesterday I was able to go the entire day without a low battery warning. Therefore, I decided NOT to charge the iPhone overnight and see whether it still had life in it.

8:00 a.m. (appx.)--I'm about to leave the house and press the home button, half expecting it not to power up. To my surprise, it did power up and did not show a low battery warning. Based on the stock battery icon, I estimate battery life to be roughly 25%-30% remaining.

8:05 a.m. (appx.)--I leave the house. I can't think of anyone to call to test coverage near my house so I pass on a coverage test this morning.

8:12 a.m.--My wife calls me. I've already passed the iffy coverage spot in my neighborhood but still have a good 15 minutes or so until I get to the office so I keep her on the phone while I drive (using my Blueant Z9, of course). During the call, she mentions that it sounds like I'm in a tunnel. I also hear a slight echo. Wondering whether these audio issues are caused by Bluetooth (I have not applied the 2.0.1 firmware update yet) or AT&T coverage, I switch from the Z9 to the iPhone. What do you know--no echo on my end, and she says I no longer sound as though I'm in a tunnel. In fact, she tells me that I sound louder but that she also hears wind noise (I guess the noise cancelling feature of the Z9 really does work). I have trouble driving with the iPhone in one hand so I switch back to the Z9. The echo is no longer there on my end, but once again she says I'm in a tunnel and my voice is softer.

8:24 a.m.--I'm still talking to my wife when I hear the iPhone vibrate (but I don't hear any alert sound). I press the Home button and it tells me that I have only 20% battery remaining. So, I have barely gotten 24 hours out of my last charge. I keep talking to my wife for another few minutes, until I get to my office. I then hang up. The good news is that the call did not drop the entire ride in, including when I walked into my office building.

9:16 a.m.--I'm waiting for the 10% battery remaining indicator. In the meantime, here are my current stats:

• Usage since last full charge 3 hours, 42 minutes
• Standby time since last full charge 1 day, 1 hour
• Current period call time 51 minutes
• Lifetime call time 5 hours, 10 minutes
• Sent data 1.4 MB
• Received data 15.9 MB

I have a noon meeting out of the office and have no way to charge the iPhone in my car (none of my iPod chargers work). So, I might have to give it a quick charge in an hour or so just to be sure I can make it through my meeting.

A couple of thoughts have occurred to me:

1. Do I have a bum iPhone unit? I doubt it, but there's always that possibility?
2. I have several apps installed, include 3 or 4 newsreaders. Do they download data when they're not open? If so, that could be the cause of high data usage and lower battery life.
3. I believe I have the iPhone set to download all attachments to e-mails. I don't know whether I am receiving particularly large attachments, but perhaps that also is increasing data usage and decreasing battery life. I can't find the setting for attachments. Can someone please help me out with this?

9:21 a.m.--I am still typing this blog (from 9:16 a.m.), and the 10% low battery warning just came on the screen. Time to charge the iPhone.

11:43 a.m.--I am unplugging my phone and heading to my noon meeting. It looks like it is fully charged, but I'm not positive. How do you tell if the iPhone is fully charged? Does it show a special icon? Oh yeah, I reset all the usage statistics.

1:14 p.m.--After my meeting, I called home. While talking to my wife, the call dropped (at 1:14). I was at 61st Street and Shea, driving westbound on Shea. I had 4-5 bars and 3G coverage. The call just dropped without any degradation in sound quality or other warning. Weird. Time to go call AT&T and complain.

2:05 p.m.--I decided to take some time while I was eating my late lunch to read Apple's online guide for the iPhone. I just found the answer to one of my questions. When the iPhone is fully charged, the icon of the battery in the upper right contains a power plug rather than lightning bolt. So, lightning bolt means charging; power plug means fully charged. I'm pretty sure my iPhone was not fully charged when I left for my meeting because I think it was still showing the lightning bolt. I also read something else that might be important:

I've been charging my iPhone by connecting it to my MacBook. When I am not using my MacBook (e.g., when I'm sleeping), I typically close the lid, which puts it to sleep. So, perhaps part of my problem is that my iPhone has not been getting a full charge. I'll have to try using the power adapter the next time I have to charge it.

LESSON LEARNED: Take some time to read the manual, Dummy.

9:54 p.m.--Good news: I was able to talk almost my entire drive home tonight without the call being dropped. Bad news: Even though I charged the iPhone this morning and unplugged it barely 10 hours ago, I only have about 25-30% left on my battery. I did seem to receive a lot of e-mails today. Here are my current stats:

• Usage time since last full charge 2 hours, 44 minutes
• Standby since last full cahrge 10 hours, 14 minutes
• Current period call time 1 hour, 3 minutes
• Lifetime call time 6 hours, 14 minutes
• Cellular Network Data sent 351 KB
• Cellular Network Data received 1.8 MB

I'll go ahead and leave the iPhone unplugged while I sleep and see whether it has any juice left in it tomorrow morning.

__________________
-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. :-)

No if the app is not visible it is not running the exception being a couple made by Apple such as Mail or iPod. It is currently impossible for an 3rd party app to download or do anything in the background currently unles your phone is jailbroken.

That's what I thought, and my iPhone is not jailbroken (yet ).

__________________
-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. :-)

Having BT on and using BT is not really a valid metric. Becuse when you use BT you are also using the phones radio also.

I have my phone set to ring and vibrate.

I pull/fetch emails manually twice a day and each time around 15 e-mails.
I've stopped palying with the device which saves a lot of battery power.

__________________
VZW, It's 2009! Time to embrace technology, not suppress it. - oops too late I've moved on over to the iPhone w/ AT$T!

If you turn the iPhone totally off, it will save even more battery power!

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

In case you can't see, I'm shaking my head at you (side to side).

__________________
-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. :-)

Does anyone know of an Outlook add-in that will count the number of e-mails sent and received over a period of time? I'm really curious as to how many I receive and whether it's the e-mail that's draining the iPhone's battery. I don't have time during the day to manually keep track and file all my e-mails after I've dealt with them. Thus, I'm hoping there's a program out there that will simply log the number of e-mails that hits by Outlook inbox. I know it's a long shot but....

__________________
-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. :-)

It should be valid as the Bluetooth and WiFi radios are separate chips/radios with thier own power consumption independant of the UTMS/GSM radios.

Bluetooth operates at 2.4Ghz just like WiFi but at much lower power levels(and shorter range), where as GSM and UTMS are in the 800 or 1800-1900 MHz range.

You can see the individual chips and radios here:AppleInsider | Every iPhone 3G chip named, illustrated in detail and even look them up and probably tally their power needs to figure out what would affect battery life the most.

Edit: I guess you where getting at if the bluetooth is being actively used then you are in a call using the phone radio too, although bluetooth still uses some power at idle even if you don't use it on a call but much more power if it is actually streaming audio. Either way it contributes to power consumption if it's enable, but how much is the question.

Although you could probably get a good idea by looking at the data usage stats in settings if you really want outlook stats check out:Xobni: Email organization, search, and navigation for your Outlook inbox I don't use it but some of my coworkers do and love it.

Mine is set to always vibrate, using push email (MobileMe) on a white 16GB 3G iPhone.

Do I win? I predicted 36 hours... <Which is what I was getting with similar settings...>

__________________
John

PDAPhoneHome Forum Moderator

Actually, the number 36 was wrong. (My bad.) I think I only got 25 hours on the last charge. I unplugged it around 8 yesterday morning and got the 10% low battery around 9:20 this morning. Thus, I think I miscalculated when I said 36 hours. I had better go correct that post.

Hmm. You have a white one and so does my wife. Perhaps the white iPhones work better.

__________________
-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. :-)

Dude, I can't believe that no one picked up on this and didn't joke the heck out of ya I got a good laugh out of it myself. I bet you haven't been getting a full charge. Let us know how using the power adapter works for you.

I also have a white phone. I turned vibrate off when it rings, but use vibrate when in silent mode. Haven't really seen how long it will last, though, as I'm still playing with it too much. Wouldn't be a fair comparison, though, as I don't use push anything with it yet.

Incidentally, my 6700 has been getting GREAT battery life since I've forwarded all my calls to the iPhone.

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

No kidding! My I can't remember the last time I charged my i760. It's been sitting on the kitchen counter at home since Saturday (8/2), and I don't think I've charged it since then.

As to charging my iPhone, the weird thing is then when it is connected to my MacBook, it looks as though its charging (the charging indicator shows). Thus, I'm wondering whether it just isn't topping off--I've never bothered to check the icon that carefully to look for the icon of the plug inside the icon of the battery.

__________________
-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. :-)

Interestingly, I got a full year on the last charge on my i730, cause it's been in the drawer that whole time!

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

Strange - if your macbook is in sleep mode, the USB port shouldn't be powered, thus no lightning bolt should display on the battery icon. If it does, either the USB port is powered while in sleep mode or the iPhone icon is faulty. If the battery icon doesn't show the plug by morning, it wasn't charging and that should prove the iPhone icon faulty.

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

Okay, I just ran a little test. I shut the MacBook's screen so it would go to sleep. I know it was sleeping because the lighted Apple on the back of the screen went off. I then plugged in my iPhone, which also was in sleep mode. Nothing happened. I then woke up the iPhone from sleep. When I did that, the MacBook suddenly woke up. Even though the MacBook's screen was closed, the Apple on the back of the screen suddenly lit up. I checked the iPhone, and the battery icon contained a lightning bolt, indicating it was charging. Then, after about a minute, the iPhone and the MacBook both went back to sleep. I next woke up the iPhone. This time the MacBook did NOT wake up. However, the iPhone still showed the battery icon with the lightning bolt, indicating it was still charging.

I want to see how much battery I have left in the morning so I'm not going to charge the iPhone tonight. I have a feeling I'll end up charging the iPhone tomorrow at work, which means it will be hooked up to my Dell.

__________________
-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. :-)

Nope Mine is black 8 gb.
I got well over 48 hrs.

__________________
VZW, It's 2009! Time to embrace technology, not suppress it. - oops too late I've moved on over to the iPhone w/ AT$T!

Hook it up to a wall charger and be done with it.

__________________
VZW, It's 2009! Time to embrace technology, not suppress it. - oops too late I've moved on over to the iPhone w/ AT$T!

I forgot to bring the wall charger to work, and I've got less than 20% battery remaining. I'll have to charge it using my work computer (Dell Optiplex). Today, though, I'll pay more attention to the battery icon to make sure it is fully charged. I also bought myself a car charger at Target last night just in case I run out of juice while on the road.

__________________
-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. :-)

7:25 a.m.--I'm ready to leave for work so I tap the Home button on the iPhone. To my pleasant surprise, it actually powers up. Looks like I have 20-25% battery remaining (boy do I wish the battery meter were more precise).

7:42 a.m.--I place a call as I pull out of my driveway. Good news: The call does not drop the entire drive to my office. Bad news: At 7:52 a.m., the "Low Battery--20% of battery remaining" message pops up on the screen.

8:42 a.m.--The "Low Battery--10% of battery remaining" message pops up on the iPhone's screen. Time to charge. I'll be sure to give it a full charge today. Final usage stats for this test:

• Usage time since last full charge--3 hours, 48 minutes
• Standby time since last full charge--21 hours, 1 minute
• Current period call time--1 hour, 19 minutes
• Liftime call time--6 hours, 30 minutes
• Cellular Network Data sent 556KB
• Cellular Network Data received 3.0MB

So, I got less than 24 hours on this charge (which, admittedly, was not a full charge but it looked almost full) with no Wi-Fi. I'm not surfing the net at all so most, if not all, of the data received must be e-mails. Is that a lot of data? Can anyone compare for me their data stats?

I'm going to go charge the iPhone now and leave Wi-Fi off for one more test, this time making sure I've got a full charge. Then, I think I'll try turning 3G off or turning Push off.

11:56 a.m.--I checked a few minutes ago (maybe 10) and the iPhone is now fully charged (as evidenced by the icon of the power plug inside the icon of the battery). At high noon, I will reset the usage stats and unplug the iPhone. We'll then see how much usage I get out of a full charge. Also, I've started temporarily storing my e-mails in a single folder so I can track approximately how many I receive per day. So far, I've already received more than 15 in the past 2 1/2 hours.

9:10 p.m.--Decent news on the coverage front. Since about noon today, I made and received a total of about a dozen calls of varying lengths. Of those calls, my iPhone did not drop any of them. The one bit of bad news is that while my wife was driving home talking to me on her iPhone, she dropped the call in the same area near our house that has been giving me problems. (So much for my theory that the white iPhone gets better reception. )

As to battery life, I did a bit more playing than normal with the iPhone today (entertained the kids during dinner by letting them play Labrynth) and probably had a few more calls than normal. I estimate I have about 50% of the battery left (maybe a tad less). Here are the current usage stats:

• Usage since last full charge 2 hours, 56 minutes
• Standby time since last charge 9 hours, 19 minutes
• Current Period call time 57 minutes
• Lifetime call time 7 hours, 27 minutes
• Cellular Network Data sent 278KB
• Cellular network data received 1.6 MB

In comparison, here are my wife's current stats:

• Usage since last full charge 2 hours, 1 minute
• Standby since last full charge 2 days, 12 hours
• Current period call time 2 hours, 32 min.
• Lifetime call time 2 hours, 32 minutes
• Cellular Network Data sent 874 KB
• Cellular Network Data received 19.6MB

Keep in mind that I don't think I've ever reset her stats. Also, she's currently still showing more than 50% battery left (maybe 60-75% left).

Tomorrow morning, I'll tell you how many e-mails I received today. That might prove to be the determining factor. Remember, my wife has not gotten a single e-mail on her iPhone in the last few days.

FWIW, between 2:50 a.m. and 10:23 p.m. today, I received a total of 61 e-mails. This number is actually a little low because I deleted a few e-mails before I decided to start tracking e-mails. Also, due to a summer monsoon, our ISP cut out around 10:30 to 11:00 and our internet connectivity was not repaired until roughly 8:30 - 9:00 a.m. on August 8. Thus, normally, I probably would have a received another e-mail or two between 10:30 p.m. and midnight. I have no way of knowing whether 60-65 e-mails per day is normal for me. We'll see tomorrow, perhaps.

__________________
-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. :-)