I bought a refurbished i730 from eBay.
My intent is to use it only as a PDA -I have a Verizon activated phone.
Received the unit and it worked well - WiFi would detect all hot spots in the area.
It detected and worked with my home WiFi (AT&T Uverse) when encryption was off.
Set same encryption keys in both router and i730 but it wouldn't work.
Back to no encryption modes and it would work.
Set encryption again but no good.
Took out the battery and replaced it.
Now I have no WiFi. The icon comes up but no scanning indication.
What did I do wrong? Is there a soft reset in the unit (like my 7135 had)?

After doing some further reading on this site I found and corrected my problem (soft reset).
Thanks to all who looked at my post.