Original iPhone 3.0 upgrade - No battery life and running warm to hot

I had the same problem (see early post).
I restored the 2.2.1 firmware (making a full restore using option-restore click). Made sure everything worked.
Then I did a restore to 3.0 (using the option-update click).
Now everything's on (push and wifi (in range), though BT is off) and the phone is nice and cool.
Hope it keeps that way.

Same problems with original iphone. Reading this post, let me to check the apps I have installed. At the bottom of your settings page, there are apps listed that have settings you can change. Check for the ones that have a auto sync option and turn them off or at least change the sync time to 1 hour instead of the 15 min sync.

Same problem here..my Iphone 3g was running flawlessly until I installed 3.0 , I have had to charge it 3 times a day so far and it will randomly shut off and reboot,my biggest concern is the overheating issue , even just sitting on the desk not plugged in it feel very warm....I had a full charge at 6am...now at8:46 not having used any applications it is charged less than half way..I guess it's time to make a trip to the Apple store...yikes not today though....

i "upgraded" to 3.0 and then had a bunch of problems. so i restored it twice... i didn't even realise my battery life was getting wasted until it died when i was out.. but anyways i believe the cause of the battery drain is the new notifications feature. i had about 20% battery life, turned only that function off (only wifi was on though), but my batttery lasted about another 10hrs before giving out. and the overheating went away too..

I thought this was an exciting new feature that allows you to cook an egg on the back of the phone.

OK. After much trial and error, I seem to have narrowed down the issue to the Push feature when used in conjunction with my work e-mail's Microsoft Exchange ActiveSync. When I disabled the Push feature for the Exchange account, my phone's battery life returned to normal, and I no longer felt that I had a hot brick attached to my belt.

To disable Push for Exchange, go to Settings > Mail, Contacts, Calendars > Fetch New Data > Advanced > [Name of Exchange account]. Then choose to use Fetch rather than Push for that account.

I left Push on for my Yahoo and MobileMe accounts, and things still work fine.

Hope this solves the issue (for now) for at least some of you out there.

I have just upgraded to OS3 and it seem to me that my phone has slowed up and the battery life is reduced also. Such is progress Grrrrrrr.

The theme here seems to be push on exchange servers. As soon as I turn on Push, I literally can watch my battery % drop over a few minutes. If I specifically turn off the push on the exchange server (through Fetch New Data>Advanced>"account name">Fetch) everything's back to normal (except for the fact that the exchange server isn't pushing my data to me!). Apple could fix this real quick by simply renaming the push toggle to "kill battery".

I have the same problem. The battery started draining really fast after I installed 3.0. I just spoke to an Appletalk person and he told me that this was the first he has heard of this problem. He suggested I go to the Apple store and get my phone diagnosed. The first appt. available was on Monday. He also said that 3.0.1 would be available in "a few weeks".

I have turned off push and location services, pulled out my sim card, restarted the phone and reset the phone to factory settings. I am charging the phone to see if any of this helps.

After waiting with anticipation for this upgrade needless to say I am very very disappointed in Apple.

I have 18 month old 2G iPhone.
I have push yahoo email, push activesync of exchange and about 5 other IMAP fetch emails.
I have no problems with a warm phone or low battery life.

I made a full backup and sync, clean restored to 2.2.1, updated to 3.0 and then restored from backup and synced. I always do it this way to blow out the cobwebs.

Has anyone actually talked to apple support? If so, what did they say? I have an original iphone as well and planned to download and install 3.0 this weekend but I am a bit leery of that now!

This is the EXACT conclusion that I'm drawing except that even after having Push disabled, the phone starts behaving weirdly sometimes.

I'm pulling my hair out and have tried everything from a 'reset' to 'wipe-everything and restore' to no effect. Push on means phone's gone! I am a MobileMe subscriber.

Same thing here ... had to charge twice today, turned off everything that I could turn off ... runs really warm to hot - good times/good times.

Hope there is some sort of solution soon, can I take it back to ver. 2.3 until Apple fixes 3.0 upgrade?

If anyone has the Associated Press Application try turning off the new push alert/notices option. I think it may contribute to causing loops and heat?????