My main problem is battery drain. I have done everything suggested to change the settings. Today I downloaded the IOS7 upgrade, hoping against hope that it would fix the drain. But it didn't help at all. I plugged in my phone last nite, turned it on this morning around 9 and by 11 it had no juice. I have another IPhone that is not being used that has IOS 5 that I would like to switch to but don't know how. I'm sure open for any suggestions,
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