OK, just woke up, here are the stats:
I shut the iPhone down and started it back up when I went to sleep:
Battery charge: 89%
Use: 6h 30m
Stand-by: 8h
(WiFi and BT off)
When I woke back up, about 6 hours later (short night, have to work in a bit) these were the stats:
Battery charge: 0%
Use: 11h 27m
Stand-by: 14h 9m
Apparently the phone has been 'in use' for about 5 hours while I was asleep ...
so do you think it's time to:
a) find out which app is causing this trouble
b) call apple and get a replacement?
Thanks in advance
Looking at your report, I would say, as others have, that you have either:
A bad app that is running in the background even after you turn off and on your iPhone. The only fix is to remove all apps and add one or two at a time back on until you find the culprit. This problem is probably your least likely problem.
Your biggest battery drainer right now based on what you stated is GPRS, this is a constantly running service even if it has a strong signal. You can not select between GPRS/Edge this is automated by the phone and can not be controlled. Only 3G can be turned on/off which I assume you did turn it off since you do not have that service in your area. I believe this is your biggest culprit.
Other battery drainers are Push...if it is on it will drain your battery. I would recommend that you turn it off at night while you sleep. Push is going to cause the most problem with user battery life on ALL users phones.
Safari is draining batteries with open web pages. Those pages continue to refresh and run their codes even in the background. This will drain batteries pretty quickly on heavily coded pages.
Bluetooth, Location, and Fetch are NOT battery killers. I have mine on 24 hours a day and it uses maybe 5% of the battery in a 12 hour period. I have 3 headsets paired to bluetooth and it does NOT search for them. It does not do anything until a signal is sent to the iPhone by the headset device which activates the iPhone Bluetooth Chip. Then it is on and uses power, if your headset is OFF then for all purposes so is the iPhone even if the switch is on.
Location is the same...it does not run in the background until you activate an app that uses the service. If you have a bad app that does not shut down properly then yes this can be a battery killer...so check those apps that use location service. But leaving it on does not affect battery life.
Fetch is brief check of your email .vs Push which is constantly active to receive the data transmissions and if active in Push mode or in Push Email mode then you will use battery power.
After all of that...I would recommend that you swap out your iPhone as you do seem to have at least a partially defective battery.
I also recommend you call AT&T and find out what type of tower services your area. This will answer a lot of your questions. All phone users should know what type of service their home area has. GPRS, Edge, 3G and soon others will be active. AT&T may have a tower down in your area...find out.
Good Luck.