my iphone 6 randomly shuts down and restart itself
I had my iPhone 6 not long ago.
The software is 8.0.2
some apps are not working properly.. like: Wechat
As well as safari, when I try to copy some paragraphs, it just shut down itself. and every time when I do the same thing it restarts the device.
I definitely need help now. Do I have to change the device or waiting for the new software or....
iPhone 6, iOS 8