iPhone OS 2.2 Battery Problems?
If you’re experiencing shortened battery life since upgrading to 2.2, you’re not alone, apparently. I noticed my 3G to have the same problem and seems to get warm too quickly when I’m browsing. After reading this thread, it seems that Pocket Safari is the culprit. If you don’t want to go through that very long thread…it is advised to *quit* Safari when not in use (*hold* down the Home button) and delete/reboot/re-add any ActiveSync/MSExchange Mail accounts, and this should fix the problem…albeit maybe temporarily.
Update: Based on my own observations, I believe Mail is the culprit. It gets worse with MSExchange accounts. It happens when the Mail client loses connection to the server (usually when switching to 3G to Edge or 3G to Wi-Fi plus any other permutation). You will notice that Mail will just try to connect indefinitely…then your battery warms up. I usually get around this by switching off 3G and then on again. JailBreak apps like SBSettings really come in handy here.
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