[miatawnt2b]

I have noticed this battery drain too. I am running a 3g, jailbroken, with modified carrier file on AT&T allowing tethering and MMS.

I have turned off push on my mail as well as in the notifications field under settings. This helped things quite a bit, but I am still draining the battery faster than I was with 2.1 jailbroken. At least now I am draining about 2% per hour instead of 10%.

So are you saying that 2% per hour of drain could be that MMS is configured? I was previously running swirly MMS, and didn't have this fast of drain.

-J

[dunnomyi]

From what I've read, it may be that my phone was continually trying to access Apple/ATT servers for a data connection and was continually being refused. I think my being 2G/TMobile is quite different from your being 3G/ATT on these issues...

[tellytel]

Push is def the culprit. There's a huge thread on the apple site about it. Even the 3gs is having these issues. I turned push off and rebooted and my battery is significantly better. Not 2.0 better though. P

[secondgennt]

2G-3.0FW-Unlocked
uninstalled tap tap revolution, poofed app store, disabled push, set fetch to manual, uninstalled lock calender and mxtube (not saying that those two caused anything, just saw that mxtube process was running constantly and lock calender was too(as it should) )...rebooted and noticed improvement in batt heat and life. Just not as good as 2.X

[c-dude]

I don't know if this is just me, but I think I have a theory. Push is definitely one culprit, it seems it doesn't work like it used to in 2.2.1 which is what I had before. I'm using fetch at 15 min interval and it's fine. Another thing is spotlight. I think it tries to index things, so it takes up some processor time, as it should. The overheating just after the update might have been caused by that. For an unrelated issue, I restored my phone again, and this time I didn't restore all the music and podcasts and stuff all at once, kind of paced it out a little. Noticed that it didn't heat up so much, for whatever it's worth.

But to my theory. After 3.0 I turned on numeric battery and I think it fools me 'cause I keep seeing the number run down .. and down I turned if off, and used my phone as usual for a day or two. I think the battery lasts "almost" as long as it used to. Maybe ..

I mean I make calls, listen to music and podcasts, watch videos, use the net, etc. Not constantly, but a good deal. I got like half left at the end of the day. I'm satisfied with that.

Just my two cents.

[stanleyhowell33]

I also notice the over heating problem too
I saw a thread were Bigboss posted that it should help to do a restore/rejailbreak and setup as new phone because
Of some issue with already jailbroken phones
I did just that and I was back to normal

[necao]

Originally Posted by Sigz

Another note, when my push is on with 3.0, and I'm by some speakers or a PC monitor... they go wild and start dancing and buzzing.

My computer screen go wild too, but nothing to do with PUSH cause is the same with it ON or OFF.

Originally Posted by miatawnt2b

I have noticed this battery drain too. I am running a 3g, jailbroken, with modified carrier file on AT&T allowing tethering and MMS.
-J

Also tried to turn MMS off but no change.

the phone is drainning like 10% of the battery every 20 minutes....

Does anyone with a non jailbreaked (and unlocked) phone have the same issue?

[ss1gohan13]

Today i did a a small test on my phone. I threw some music on there hit shuffle and repeat and let it run the entire day i was working today. Surprisingly enough to say it ran for a consistant 9 hrs and 6 min and still had 43% battery by the end of the day. To inform all I have a iPhone 3G that has been unlocked and jailbroke (i have a the tweak for the battery percentage on too :P). To add into this I was also using a couple of apps (Facebook, FML, Moron Test) and did some browsing on the net becuz I had some down time during my lunch break and wanted to see how much it was gonna drain. Anyway I just wanted to share with all. I do have push off and fetch set to manual and 3G turned off.

[necao]

Originally Posted by ss1gohan13

Today i did a a small test on my phone. I threw some music on there hit shuffle and repeat and let it run the entire day i was working today. Surprisingly enough to say it ran for a consistant 9 hrs and 6 min and still had 43% battery by the end of the day. To inform all I have a iPhone 3G that has been unlocked and jailbroke (i have a the tweak for the battery percentage on too :P). To add into this I was also using a couple of apps (Facebook, FML, Moron Test) and did some browsing on the net becuz I had some down time during my lunch break and wanted to see how much it was gonna drain. Anyway I just wanted to share with all. I do have push off and fetch set to manual and 3G turned off.

Luck You

Well I did some tests too, push OFF, bluetooth OFF, 3g OFF, edge OFF, wifi OFF, location OFF, no processes runing, turned off veency, did not used skype nor beejive (dah!) received and made some calls (not too much)and the battery went from 70% to 15% in 13 hours.

Thats improvement?

hummm!! dont think so..

[Roamerick]

Yup. Turning off Push for any Exchange accounts solved it for me. I was about to return the handset (32GB 3GS) when I stumbled upon the solution in another forum. Now I'm at 50% after about 8 hours of fairly heavy use, which is a DRASTIC improvement from before.

Must be a 3.0 bug.

[ss1gohan13]

Originally Posted by necao

Luck You

Well I did some tests too, push OFF, bluetooth OFF, 3g OFF, edge OFF, wifi OFF, location OFF, no processes runing, turned off veency, did not used skype nor beejive (dah!) received and made some calls (not too much)and the battery went from 70% to 15% in 13 hours.

Thats improvement?

hummm!! dont think so..

Again today I was listening to some music and what not. But I had to make a phone call. I was sitting at 72% and my phone call was less than a minute. Checked the battery and it dropped 3%! I'm sorry but WTF! Jobs might be visiting the hospital again when we meet face to face

[DJ Bless One]

MY SOLUTION:

Culprits: Backlight, Push, 3G

1) Disable Fetch new data in the Mail Settings
2) Disable Push Notifications in settings (only if you have a push app installed, such as BeejiveIM, or else the menu option is not there)
3) Install SBSettings, and keep an eye on running processes. Kill iPod, Mail, Safari when not in use. (You can also force quit an app by holding down the lock button until "Slide to Turn Off" appears, then hold the home button, and the app will force quit.
4) Keep brightness left of center. Don't use a mirror protector that needs brightness to be cranked up.
5) Always lock your phone before putting it in your pocket.
6) Turn off WiFi and 3G when you are not using them (Using SBSettings). Edge is okay to keep on since it does not actually disable when turning off.

I hope this little tutorial helps. Simple steps preserve my battery quite a bit. I only drain about 1%-2%/hour on idle. Treat your iPhone like your baby, and not like your girlfriend! lulz

[teddybossy]

i had the same problem before..
my solution: set it as new phone.
though, it lost everything, but everything back to normal!

[BobbyOnNY]

hey i just wanted to let you know, ive had the same problem. i restored and restored and restored, finally i think i figured out whats going on. its save me from having to recharge my battery every hour. it seems as though its the wifi draining it. try turning it off when you don't need it and see if that helps.

[lv99]

Originally Posted by necao

the phone is drainning like 10% of the battery every 20 minutes....

Does anyone with a non jailbreaked (and unlocked) phone have the same issue?

i restored my iphone 3G back to factory default, and the battery hold up very well. so jailbreak_other apps must have some impact on how the firmware 3.0 operates.

I tried to jailbreak with Pwnage Tool 3.0 and this time select 746MB of memory to reserve for the OS. reinstall all the apps...

the battery does not drain few per point after testing the web, email (on wifi) for 2 hrs. application launches as fast as none jailbreak version.