does different sim card will different drop of battery? I have turn off gps,wifi,notification,................all the app in the background.... I just got a T-mobile micro sim card on the iphone 4s, and the battery drop 1% every 2mins. when i let the screen on. WHY?
no, but something is not right with your iphone. Try to update or restore the firmware! Btw if you have google exchange set ul I would recommend removing it cuz contacts always fetch for no reason and loose battery life.
I also went the apple, they checked the battery, said no problem with the battery, and told me to restore. I did restored my iphone 4s, still same.....
when i fully charge to 100%, it takes 2-3 hours to drop 1%, and after that the battery drop more faster.
bad signal can affect battery. If it stays at 100% for a couple few hours then starts dropping battery signal, then it sounds like the battery % is not reading out correctly. Try draining your battery until it shuts off, then plug in and charge to 100% and leave it charging for another couple hours after it's full. Some say this will 'calibrate' your battery read-out. Not sure if it really works but you can try. And btw, if your battery stays at 100% for 3 hours, then drains 1% every 2 minutes, thats still over 6 hours of battery life with the screen on. Which is not great, but if the screen is at full brightness and you are running apps or browsing/transferring data over 3g.... not terrible depending on what you are doing with it. Have you tried to see how long it actually takes to drop to 0%?