Why does my iPhone keep going into a boot loop?
My iPhone 6 Plus is used and keeps going into boot loop and restarting and it only does this while its sleeping, never while I'm using it. Recently i tried to reset it again and while it was erasing everything it went into a viscous boot loop and has yet to come out.
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Have you followed the information here?
https://support.apple.com/en-vn/HT201412
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