iPhone4 shuts off at 29% 30% battery remaining

Greetings!

I have an iPhone4 around a year old running iOS 4.3.3.

I don't know when this problem started... I usually charge before hitting 30% battery. Of course the one time I need to use the phone for an emergency and don't have a charger handy I have a problem 😉

At 29% battery the phone will shut itself off and show the charge screen. If I do a hard reset the phone will come on... boot up... then turn itself off again.

If I charge the phone to 30-31% it will work perfectly fine until it hits 29%. I've repeated this a dozen times to make sure.

I've tried everything I can think of to try to fix this problem. I can't really find anyone else with the exact same problem.

iPhone 4, iOS 4.3.2, iOS 4.3.3

Posted on May 31, 2011 6:26 AM

20 replies

Sep 17, 2013 9:57 AM in response to justchil

Hi, for the record I've had this problem ever since I installed iOS7 GM Seed on my iPhone 5. Every night I charge it for 8 hours and have depleted the battery several times. I think I can only recall 1 time since that it went below 30% without shutting off. Hope someone can shed some light on this — It's frustrating.

Oct 12, 2013 6:42 PM in response to justchil

My iPhone5 has started with this same behavior after upgrading to iOS7. Around 29%-33% it will shut off and show the "need charge" screen.

I will have to plug in the charger and then power it up again. Once it powers up, the battery still shows the percentage it shut down with (the 29%-33%).

Nov 10, 2013 6:11 AM in response to justchil

i am having the exact same problem.i have an iphone 4.my phone randomly turns off even when there is 20-60% battery left.this problem started once i updated to ios7.0.3.

i was told that this problem was because i updated my software via wifi.so ill try restoring it via itunes and check if thats the solution.

i have already tried setting it up as a new iphone but it doesnt help.

i dont know if its a hardware or a software problem.

if anyone did successfully solve this problem please let me know :|

cyberome

Level 1

0 points

Dec 8, 2013 7:48 PM in response to justchil

Same problem on my 4S once upgraded to latest IOS. Full drain, 12 hr recharge and hard shut down did not help. This appears to be an IOS version problem, not a battery problem!

Dec 9, 2013 10:16 AM in response to justchil

My situation has seemed to get worse.

Shutting off at 60% and showing no power when trying to turn back on, once I plugged in the charger, it immediately showed 60% on power up. It's difficult to rely on my mobile device if I don't even know when it will shut off.

I chatted into Apple Support and they ran a diagnostic on my device and stated I needed to replace the battery.

Because an $80 battery replacement on an iphone that is barely a year old just isn't an option since I don't know if that is actually going to fix the problem, I tried something else.

I turned off the Background App Refresh and at least for the past two days it seems to be better. Of course, I can't really tell because it has a mind of it's own. It's also strange that I didn't have this issue until I upgraded to iOS7 so replacing the battery just doesn't make sense to me.

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iPhone4 shuts off at 29% 30% battery remaining