iPhone 4s Randomly Rebooting Post 8.3 Update

My 4s was doing this after installing 8.2 - However last night the phone prompted me to update my carrier settings (EE - UK) and it has now stopped!

I do not know how you force a carrier settings update, but worth looking into. I think the reason is that EE now use Wifi to make calls when the signal is poor, must be some update?

I'd suggest backup and restore.

To make sure that this is not software related, set it back to factory settings, without using any backup data afterwards. Set up the rest of the personal settings manually and test the phone.

If the phone works as before the update, restore from the latest backup. If the problem comes back, the backup data contained corrupt data, causing your issues.

If it still does not work, this is a hardware issue and the phone has to be serviced by Apple or an Authorized Apple Service Provider:

Use iTunes to restore your iOS device to factory settings - Apple Support

Find an Apple Authorized Service Provider

iPhone - Contact Support - Apple Support

You can check for carrier updates by following the steps mentioned in this article:

iOS: Updating your carrier settings

I seem to have this problem as well, and only after iOS 8.3. Repeatedly reboots while charging/connected to Mac. My workaround which seems to work: ensure the screen is turned ON while charging/connected. Go to Settings>General>Auto-Lock, set to "Never". Then turn down the brightness all the way to save your battery power. You can revert to your original Auto-Lock setting when done charging. Hope this helps. We need a fix for this annoying bug asap.

I noticed the same thing - my iphone reboots when I plug my iphone into the charger. However I notice that it only happens when I had apps running when I plugged in my iphone. When I closed all my apps (double clicking on the home key and swiping up on all the apps), I don't have the reboot problem.

I also have an iPhone 4S and am getting the reboot problem while charging. I just updated to iOS 8.3 and was prompted to install new Telus carrier settings on Sunday. I don't seem to have battery problems (although it's possible my battery is draining a bit more than usually).

I reset all my network settings and just reconnected solely to my own home WiFi.

Hopefully we can get some traction and a fix. Thanks in advance Apple!

I thought this might have had something to do with it but it hasn't seemed to help:

http://arstechnica.com/security/2015/04/22/ios-bug-sends-iphones-into-endless-cr ash-cycle-when-exposed-to-rogue-wi-fi/

POTENTIAL FIX - Turn off Field Test Mode

My iPhone 4s started to reboot/restart repeatedly after installing both 8.3 and the AT&T carrier update. For about a week, I've been leaving the screen out while charging (set to minimum brightness) to prevent the restarts. I think I may have found a more permanent solution. 6 months to a year ago I entered Field Test Mode and set it up to allow me to see the numerical value for my cellular strength (see link below about Field Test Mode). Today I turned off. My iPhone has not restarted once during its current charge. To turn it off go to the phone dialer and dial *3001#12345#* and then hit call. When Field Test Mode starts hit the home button. After that you will no longer be able to see numbers in the signal strength bar. So far I've made it from 35% charge to 75% charge without a single restart. Fingers crossed.

http://osxdaily.com/2012/08/20/field-test-mode-iphone-signal-strength-numbers/

Both myself and a co-worker are having the same problem, on iPhone 4s', with an onset of the IOS 8.3 release. It does not always happen, but it happens enough to be very annoying (especially since when it reboots it buzzes, and I charge it next to my bed at night... even a few wakeups at 2:00 AM are too many!

Both phones are in good condition, with good batteries (mine will last a few days in standby, and a full day with heavy use).

This is very annoying, please fix this in the next update, Apple!

Same here. iPhone 4S, only reboots when charging, fortunately. Happened after 8.3 update. Apple please fix!

Hi pedromg -- a quick update -- I resetted my 4S settings and it has been stable for a few days now when charging/connected to the computer. Try the following (you won't lose apps or data, however your phone settings will revert to the default): Go to Settings>General>Reset>Reset All Settings. This seems to have resolved my infinite-reboot problem.

Thanks man! I just did that, hope it works, I'll keep the thread updated it the problem comes back.

I had already force reseted my iphone (home button+lock button), and I had no reboots for a few days, but then they came back.

There's also the iphone total restore, which I am gonna leave as a last resort if I really need it and/or Apple takes too long to fix.

Update: No luck here, still reboots when charging...hope it keeps working for you and some others.

[sign]Apple Read this!! 👿[/sign]

Just an update - it seems like my workaround doesn't work anymore. 😟