2.2 Overheat Problem

[autumnNOCTURNE]

Since updating my 3G's firmware to 2.2 I've had an issue on occasion which has steadily gotten worse.

I always exit my apps before I put it down, but sometimes I'll be using it and it will operate normally and when it goes to sleep it gets and stays warm. Also, the battery drains noticeably quickly, so it seems some app is stuck in memory trying to do something. Likely in a loop trying to connect to get data.

Has anyone else had this issue? I can't pin it to any one app in particular, but I did read on this site (I think) about Safari causing the issue and you have to force-quit it to work around it. This has worked before, but I'm noticing the problem even when I'm not using Safari.

I searched the forums, but found no prior threads - has anyone else experienced this? Any workarounds/fixes that don't involve a complete restore?

Thanks in advance.

[squampton]

...from The iPhone Blog.

Like most iPhone users out there, I’m always excited about firmware upgrades because you EXPECT things to be BETTER afterward, right? I just so happened to be up late, writing, on the night that the 2.2 firmware update hit, and wasted no time in downloading it to my precious iPhone 3G. Once completed, everything was fine and much improved! Or… was it?

It wasn’t long until I realized that my iPhone was heating up excessively and I couldn’t keep it close enough to a charger. If my phone was topped off when I went to bed, and left unplugged, it was dead by morning. How could this be? Even a reset didn’t help. There had to be some app running in the background that was chewing up my battery faster than Pac-man on a steroid/speed cocktail. Are YOU having the same problem since the 2.2 update? If so, read on. This tip may apply to you!

I closed any apps that could be the culprit - I logged off of my IM app. Since the 2.2 update, I had changed nothing, so I assumed the update made some kind of change that resulted in something on my iPhone being ‘always on’ and, likely, using data at a voracious rate. I reset my Safari to make sure it wasn’t the culprit. What could it be?

The only other app on my phone to use data was Mail. I have Exchange set up on my iPhone so that I can get my company mail, contacts, and appointments in as close to ‘real-time’ as possible. Could the update somehow have affected my Exchange settings and made everything wonky? It was time to experiment.

One thing I’ve learned through painful experience is that, in most cases, a problem can be fixed by starting with the simple things. I’ve learned this when diagnosing car problems. If the car doesn’t start, why? Does it turn over when you turn the ignition? Nothing at all? Could be the alternator, right? Oh wait! What about the battery? It’s a lot cheaper to check the battery and replace it before digging under the hood and replacing an alternator.

With this start-with-simple approach, I deleted my Exchange email account and then set it up again from scratch. Guess what? It worked. For some reason, the update did not play nice with existing Exchange settings and email. Once the update ran, my Exchange was locked into a constant ‘on’ state and was endlessly searching for mail that wasn’t there, rather than waiting for the mail to be ‘pushed’. No wonder my iPhone was like carrying a hot coal in my pocket! A simple deletion and setup of my Exchange mail account resolved the problem and my battery life has been normal ever since.

If you use Exchange on your iPhone, I recommend deleting and reinstalling your mail account after all future iPhone updates. Then, you’ll avoid the distress I went through when I couldn’t get 5 hours out of my iPhone after a full charge.

[autumnNOCTURNE]

...from The iPhone Blog.

Thanks for finding that.

I don't use Exchange on my phone at all, just Gmail, but it's worth giving that a go.

I'll try and report back.

[autumnNOCTURNE]

I'd forgotten I had my work Exchange account on my 3G which I never actually use. After deleting it outright, I haven't any issues with the overheat or battery drain.

Huzzah!

[DeCSS]

Hmmm... no exchange account on mine, but still having the same problem. Maybe defective?

[autumnNOCTURNE]

Hmmm... no exchange account on mine, but still having the same problem. Maybe defective?

Maybe try deleting and re-adding whatever mail accounts you do have? It may not necessarily be a problem with Exchange. I was only using Gmail but had the unused Exchange account on there.

Since I took the Exchange one off I was cautiously optimistic, but it's been several days now and I haven't had the problem since I deleted the account, so I'm thinking that was it. I also don't have fetch turned on with my Gmail, so maybe try disabling that if you have it on?

[autumnNOCTURNE]

Unfortunately this problem has now returned worse than before. Not sure why.
Even tried wiping my Gmail account and re-adding it and it didn't solve the issue.

I'm trying to narrow it down to see if it's an app causing the issue.

[Rob9874]

I noticed my iPhone gets hot and my battery drains after using the Tuner app. Even after I shut it down, the battery continues to drain. so I don't use Tuner anymore.

[autumnNOCTURNE]

I noticed my iPhone gets hot and my battery drains after using the Tuner app. Even after I shut it down, the battery continues to drain. so I don't use Tuner anymore.

Sometimes force quitting the application (by holding the home button for 5 seconds) helps, but I find this isn't helping and I think I've narrowed it down to Twitteriffic, unfortunately.