Q: iPhone 6 plus sudden shut off and won't turn on.

Past week or so my phone is having the same problem, turns off even though the battery was almost full (70-80%), did the hard reset and worked for me, but last night the phone just switched off, i tried 10-20 sec (power+home button) and it tries to start up 1-2 sec and then just dies . Also it just shows some back-light as if starting up when charging ( that's about it ). i am taking it to apple store and will update on what they have to say.

I had this happen too....they need to fix this...must be the new IOS update

Lady_in_red wrote:

 

There's definitely something buggy with the latest software upgrade.

No there's not.

Nicky1970 wrote:

 

I had this happen too....they need to fix this...must be the new IOS update

Who are "They?"  It's certainly not the IOS update.

this is happening to my 6 plus, too. resetting doesn't work for me. and now it's rebooting itself every 5-10 minutes with a black back-light and nothing else on the screen while unplugged

Took phone to genius bar, they replaced the phone (0$ - it was still under warranty ), the associate said that hardware related - internal logic is failing, i didn't ask for more details.

my phone won't power on,  my screen went to red and blue and completely shutdown. Tried rebooting with apple support and told me it could be hardware issue.

This has happened to my wife's iPhone 5c. Hard reboot got the phone working again, and always had at least 35% power.

We never had an issue while she was on Verizon, but after we switched her to Straight Talk, this started happening. Even dropped a few calls.

Not trying to muddy the waters as far as the cause- but thought it strange it didn't happen until after the switch.

.

This just happened to me this morning for the first time. I had noticed the phone (6Plus) felt quite warm, but I was busy and answered a couple of texts on my MacBook Pro. (My battery had been at 97% a couple hours earlier and I hadn't used it very much) When I picked up the phone, it was cool but wouldn't turn on, no matter what I did. I plugged it into my backup charger and saw nothing on the screen. I went back to doing some work and maybe 5-10 minutes later the phone came on by itself and was at 66% of battery.

Any ideas? Does it shut itself down if it overheats? What might have caused it to overheat when it wasn't being used much?

Thanks. ~ Sue

There is an overheat shut-down but that's usually invoked when the overheating is from external sources such as out in the sun or in a hot car in the summer.  The iPhone shouldn't heat up enough in a benign environment to trigger that mechanism.

So this happened to me today too. iphone6 was charging overnight, alarm worked fine in the morning, checked emails first thing, but when I got to work phone was dead. Hard reset didn't seem to work ( but not sure if I held it down long enough). Rang apple when I got home and tried several things, including another hard reset when plugged in to charge... finally when plugged in to computer and itunes the phone rebooted itself with the hard reset for at least 25secs, and was at 87% battery. Am going to be very annoyed if this is an ongoing issue!!

What gives? This same issue happened to me just 5 minutes ago, my iPhone 6 is brand new. This is unacceptable.

Hi -  just reconfirming what I understood from Apple when I took my phone in.  This is a hardware issue. They replaced my phone for free as it was still under warranty (and had no water damage).   I suggest if you are having these issues that you take your phone into an Apple store ASAP before your warranty expires.

This just happened to me as well.  Nothing suggested has started it back up.  When i hook it into iTunes it tells me i have to update it to original settings as it won't take the "update"!?  what the heck is that!? 

My iPhone 6 just did this very same thing to me. I was using maps and put my phone to sleep and then it would not come back on. I tried plugging it in to the wall charger and then I plugged it to my computer and held the power and home buttons down simultaneously for several seconds and it powered back on.

Time will tell if it will happen again. Must be an OS bug, I've never had this happen with any other OS or iPhone I've owned.

T