Do not charge or press on a swollen, smoking, leaking, sparking, or dangerously hot device.
Confirm basic power
Connect a known-working compatible charger to a reliable wall outlet. Leave the device connected long enough to recover from a deeply discharged battery before judging the result.
Check the power source
Test the outlet with another device or move to a known-working outlet.
Inspect the cable and adapter
Look for obvious damage, looseness, overheating, or contamination. Try another known-good compatible combination if available.
Look for signs of life
Listen for sounds, vibration, notification activity, or computer recognition. These clues can distinguish lost power from a failed display or frozen software state.
Try the correct restart
Use the official forced-restart sequence for the exact device model. Button combinations vary, so avoid relying on a sequence for a different model.
Decide whether service is next
If the device remains completely unresponsive after reliable power and the correct restart—or if there is swelling, impact damage, liquid exposure, or unusual heat—qualified inspection is the safer next step.