Had the same problem 2 months ago en still had the same problem last night . Must my SD card going bad. My method that work. 1. if you have charger connected to your phone , disconnect your CHARGER and REMOVE your SD card. 2. notice your notification light will this light up RED and your getting no response from your phone. This means your phone is STOCK / FROZEN aka BLACKscreen mode. 3. After about 10 - 15 min notification light will go OFF, don't worry phone is FINE. 4. DON'T plug in your charger, just set your phone aside , as it will continue to discharge 5. Depending on the battery percentage en app's that you were running before BLACKscreen mode. It will take some time to fully discharge. Mine was about 60% , it took about 12hrs to discharge. 6. When it is FULLY Discharged, the screen will flash WEAK BATTERY ICON. pres power button slightly and you will see 1% WEAK BATTERY ICON. 7. At this point you can connect your charger, you will see that your phone is charging aging normally. 8. Now you can use your phone again. HOPE this helps.
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