I have been using iphone5 for the past 20 days and to beat my frustration with its battery drain issue I did try all possible combinations to get it right somewhere and alas I continue to remain frustrated... Now what is concerning me more goes like this....
1. I still retain my iPhone 4 and I have taken measures to wait until both my new and old discharge completely and then together recharge again to 100%. Now switching off background app on both, icloud , notifications , push mail, 3G/4G, Siri, and all other services which may seep off battery life. I have just kept wifi and cellular network on both 4 & 5 and kept vigil on both for drainage.... Much to my surprise.. After 7 hours my IPhone 4 retains 100% battery and IPhone 5 is at 91%?? Usage would be similar on both like kind of speaking for 5 mins. What could be draining the iPhone 5 battery with such an inactive use via-a-vis iPhone 4 showing great results.
2. Next, with all services active on my iPhone 5 I see a drop of 1% every minute and when it was 97% I did try to reset the network and I saw the phone got back to 100%?? Again when I had to enter the one or two wifi password to enter some network or the other .. I noticed the drop started again.
3. I also noticed that when I travel out from my home network and using other countries cellular network my batter life improves of course with the 3G /4G switched off. Also I wanted to understand that if users from all the networks were having similar issues on their home network... Could this be related to poor network optimization at the telco's end.
Could you help me with a solution. I have been using my iPhone 5 with the backup of my iPhone 4 apps.
I just wouldn't like to go any change this phone as I wonder that the reason could me more on IOS front and a wait could sort this out or I have to do some sort of reboot to get full battery gain or just swap this phone .. Maybe mine came with some internal circuitry crap.
Look forward to hearing from you.