iPhone 6 keeps restarting after new iOS 11 update
I am currently abroad on the other side of the world and i've recently updated my iPhone 6 iOS to the newest 11 and after I charged my phone to 100% in this location, my phone keeps restarting. This is the second time this has happened. The first time after I charged it to 100%, I unplugged and the problem began. I plugged it back in and it said 1% while charging but when unplugged showed its true battery percentage. I was able to run it down to 10% where it went to Low Battery Mode and it all seemed to go back to normal.
A few days later (today) I charged it to 100% again thinking this time it will be ok, but after an all day tour (pictures and uploading included) it was still 100% at the end of the day which I found odd. I shut down my phone (mistake) the normal way by holding the power button, and after I turned it back on, it immediately said 1% and the restarting began. Even when I charge my phone now it says 1% and after unplugging still says 1% whereas before it showed its true percentage. I don't think I'm able to run it down to Low Battery Mode like last time. I'm at a loss and the nearest apple store is 2 hrs away. What are my options?