A phone that will not charge is alarming, but the cause is usually simple and cheap. Work through these in order — the most common causes come first.
1. Test a different cable
Cables fail more than any other part. They flex constantly and break internally where you cannot see it. Try a cable you know works. Do not just look at the cable — the damage is usually inside.
2. Test a different adapter and socket
If a new cable does not help, try a different wall adapter and a different socket. Charging from a computer's USB port also tells you something — if it charges there, the problem is on the adapter side.
3. Clean the charging port — the most overlooked cause
Pocket lint compresses into the port over months and stops the connector seating fully. Signs: the cable feels loose, wobbles, or only charges at a certain angle.
- Power off the phone.
- Shine a light into the port and look for packed debris.
- Use a wooden or plastic toothpick, gently, to hook out the lint.
- Finish with a short burst of compressed air if you have it.
Never use a metal pin or needle. The contacts inside are delicate and bridging them can cause permanent damage. People are consistently surprised how much lint comes out and how completely this fixes it.
4. Restart the phone
A software fault can block charging. Restart, or force restart if unresponsive — usually power and volume down held together for about ten seconds.
5. Check for a moisture warning
If the phone shows a moisture-detected message, it is deliberately blocking charging. Do not override it. Power off and leave it port-down in a dry, ventilated place for 24 to 48 hours. No hairdryer, no rice.
6. Try charging while powered off
A deeply drained battery sometimes shows nothing for a while. Leave it connected at least 30 minutes before concluding it is dead.
When it is a hardware problem
Seek repair if it charges only at a certain angle, the port is visibly damaged, the phone gets hot when connected, or — importantly — the back or screen is bulging. A swelling battery is a safety issue: stop charging, do not puncture it, and take it to a service centre. A charging-port replacement is otherwise a common, affordable repair.
Preventing it
Unplug by holding the connector rather than pulling the cable, avoid charging with the phone in a pocket, clean the port every few months, and use good-quality cables — cheap ones fail faster and can damage the port.
