Hello there! 
Last week I installed iOS 7 on my old iPhone 4 from 2011.
I know that a lot of people is having troubles with the battery life but in my case is more worring...
With iOS 6 or 5, when I turned ON the Airplane mode and turned off wi-fi and bluetooth, the battery could last for 10 days? Well I dont know exactly but a lot of hours. More than 5 days sure. Without use the iPhone, just keep it in airplain mode.
NOW...with iOS 7, Airplane Mode ON and ALL the other turned OFF....my battery lasts 8 hours maybe....I can't do nothing with this small battery...
Can I Fix it? It's airplane mode not working correctly?
Thanks a lot
Last week I installed iOS 7 on my old iPhone 4 from 2011.
I know that a lot of people is having troubles with the battery life but in my case is more worring...
With iOS 6 or 5, when I turned ON the Airplane mode and turned off wi-fi and bluetooth, the battery could last for 10 days? Well I dont know exactly but a lot of hours. More than 5 days sure. Without use the iPhone, just keep it in airplain mode.
NOW...with iOS 7, Airplane Mode ON and ALL the other turned OFF....my battery lasts 8 hours maybe....I can't do nothing with this small battery...
Can I Fix it? It's airplane mode not working correctly?
Thanks a lot