• Low battery: check battery meter or connect to charger.
  • Charging cable could be loose. Remove it and reinsert firmly.
  • If the phone displays an "Invalid Battery" or "Unable to Charge" message, see the Battery Removal Guide and make sure the battery has an "Original Equipment" hologram.
  • Check positioning of SIM card.
  • SIM card is out of place - reposition the card.
  • Replace the flex cable that is connected to the circuit board.
  • Remove the battery while the device is on (forces the phone to dump its temporary memory).

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