iPhone 6 Plus acts erratically at random times

This has been a problem since I've owned it. Going from iOS 8.1.3 to current.

What troubleshooting steps have you tried (i.e. restart, reset, restore), since you've had these issues for months?

Sounds to me as though it could be a serious electrical problem at the home. Try plugging it into another electrical outlet. I've read of a number of issues similar to this behavior with bad electrical ground, especially if this is only occurring when the device is plugged in to charge.

Dougout78 wrote:

this is a serious flaw in iOS from what I can tell...

You're welcome.

No, there is a serious flaw in the hardware in your phone, your charger, or electrical system in your house. How are you charging the phone?

Hundreds of millions of iOS users don't have this issue.

I'm having the same problem only mine happens when it's not being charged. It's very frustrating..I've restored the phone to new and the problem is still there. I've gone to the apple store twice and because it didn't happen in front of them and it passed all their tests, they won't replace my phone.

I have the exact same problem!!!! I swear it's like the phone is possessed! I did all kinds of resets and restores about 5 times each to no avail. I contacted AT&T and they replaced my phone. I backed up the old phone again and restored the backup to the new phone... Same problem now happens with the new phone!!!! I went to the Apple Store and they said there was some sort of corruption in the phone that was saved in the backup that carried over to the new phone when I restored the backup from the old phone to it. They said they could fix it but didn't say how or what caused it. Unfortunately, there was over a 3 hour wait and I couldn't stay. Has anyone found the fix to this issue on their own yet?

More than likely the problem is just as Apple described to you, corruption in the backup file. That will easily move from phone to phone when you restore devices from a backup. Your only alternative at home, and exactly what Apple would do at the Apple Store, is to restore the device to factory, and then sync your data back to the phone individually, not from the backup. You need to ensure that your photos have been imported to the computer, and your contacts and calendar have either been synced to a supported application on the computer or to a cloud service. You will also need your Wi-Fi passwords and any other passcodes, as you will have to enter all of that information again. Transfer all of your iTunes purchases to the computer and your iTunes library. Restore to factory using the information and instructions here. Use iTunes to restore your iPhone, iPad, or iPod to factory settings - Apple Support