December 3, 2011
iPhone 4S users are reporting that their device does not fully charge to 100%. Users report that their iPhones only reach 90 to 98 percent charge even though they charged their iPhones all night.
The iPhone battery may need to be recalibrated from time to time to keep the battery percent display accurate. It is recommended that you fully charge your iPhone, then completely run it down once a month to calibrate it.
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December 8, 2011 at 9:45 AM
Ridiculous! That’s like having to recalibrate the the fuel gauge in my car every time I fill up! You would think they would have this worked out by now!
February 3, 2012 at 8:52 AM
That is not correct. Fuel gauges display the amount of gas on the tank due to a mechanical system (even if the gauge itself is electronic) and measures a level of fluid inside the tank. On the other hand, batteries are satturaded with electricity, there´s no physical quantity to be measured.
December 15, 2011 at 5:42 AM
The problem occurred just AFTER I did just that! My iPhone battery won’t last a day, so I let it drain to 0 overnite – only 94 percent.
December 29, 2011 at 12:46 PM
I had the exact same problem as Jim. I did a full discharge and now it won’t charge past 96%.
Any advice?
December 26, 2011 at 1:02 PM
Mine was on charge all night last night and only got to 91%
December 30, 2011 at 1:30 AM
This happened to me, I removed the normal charger and put it in my dock. Back up to 100%
January 17, 2012 at 5:57 PM
Im on here looking for answers. Mine won’t accept ANY charge from ANY source. When I first got it (2 months ago) it would charge all night and reach 94%. Now today it won’t charge at all. I got a lemon not an apple.
January 23, 2012 at 3:13 AM
Len
I had this problem a few times on my iPhone 4. I did a hard reset with it plugged in to the computer and iTunes (not charging from the wall socket). The result was it started charging again upto 100% not sure why but it did. A hard reset is to press and hold the on /off button and the home button at the same time until the screen flashes. Hope it works
February 8, 2012 at 6:29 AM
My iPhone 4 is doing this too. When I wake up in the morning I unplug the cable from the charger then plug it back in and it charges to 100% in about 15-20 minutes. (-: