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I replaced the battery myself. After finished, I trun on the phone, it vibrates once and the screen light up a little (hardly see it) but cannot boot. When I press and hold the power button, it turns off but on again automatically with the same phenomenon. What did I do wrong? I can charge the battery (the LED changed from yellow to green).

  • i guess you have damaged screen when opened the case – alecxs Jun 24 '19 at 19:41

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