problem with my phone after the upgrade

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10

2016-12-06 22:20

Hello, I have a problem with my meizu m3s. some days ago i do the upgrade automatically. some days after ny mobile phone suddenly switch off. i couldn't switch on with the buttons but 20 minutes after this it switch on automatically. another thing that append is that since this episode i can't use the back button with the only touch method, nut i have to press it.
can i resolve it? how?