I am returning mine tomorrow. I am not going to wait and see if they fix the problem. My 2 year old heavily used iPhone 4 lasts longer and the worst part is I bought the iPhone 5 so I would get back to normal battery life. This is a major problem and buyer beware. Steve jobs has definitely left the building.
Wait... i have found solution... so far its working...
I found this solutions readig many post here...
Well first what i did:
i reset my network settings...
then i completly removed skype aplication ( i read that has bug that uses phone even you are not signed into skype)
I deleted my iCloud acc (im not using it because i back up using iTunes)
Then on 5% off batteries i restarted my phone pressing off and home button at the same time.. then i plugedd it on charger an charge full cycle...
I tested it...I was using 3G mobile network, browsing on the internet, played games that are using mobile data... and so far after 1h and 13min of usage and 1h and 18 minutes of stand by battery indicates 83%
I did the math (i hope im right) and at this moment it seems that is working ok
Sorry im writing from Croatia and here is 01:00 im going to sleep and i will post in the mornig some new informations... if you cant wait try this... If my math is wrong sorry
Now 35% usage 3:40 (with wi/fi, 3g and location services ON) using facebook, browsing internet, watching you tube videos, calla,playing games) standby is 13h and 16 min
Hm i think this is ok... What do you think?
Just to say that my iPhone4 and iPhone4s have same durability so definitely think its not hardware problem but software issue...
No that's horrible battery life... It's about what I'm getting, too. It dies 10% in standby while I'm sleeping. iPhone 4 iOS 5.1.1 didn't drain even 1% in that scenario. Different software different phone but there is something very wrong! Your battery life is terrible. Return the phone or exchange it. They have got to figure this out.
Ok this is the final situation now its on 3% and used time 5h and 6min... standby time is 15h and 6 min
Yes definitely bad... but the problem is there is no new iphone5s in Croatian stores... and policy is here that if you want new device first Apple technician have to test the old one... so that means 10-15 days whitout the phone...
Im so mad man... i had all iPhones and this one is worst
Ok 20h from disconecting from the charger i had 7h using the phone with wifi on, location on, 3g on except ( 8h of sleeping) i use it massive playing games, facebook, browsing, calling and i have 32% battery left so far its good for me. Today im going to make finall test if gets worse than this im returnig my phone back.
I think now battery is good what do you think?