Phone not charging at all? What to check, in order
When a phone will not charge at all, or says charging but never rises, the fault is usually the port, cable, moisture or battery. Here is how to tell.
A phone that shows no sign of charging is usually written off as a dead battery. In practice the battery is often fine and power simply is not reaching it. Charging is a chain: the wall socket, the adapter, the cable, the port, the charging circuit and finally the battery. A break anywhere along that chain looks the same from the outside. The useful approach is to test each link in turn, starting with the parts that are cheapest and easiest to swap.
No charge at all, or charging that never rises
These are two different faults. If nothing happens when you plug in, with no sound, no icon and no light, power is not getting through, so look at the socket, adapter, cable and port. If the phone shows the charging icon but the level stays the same or falls, some power is arriving but not enough. That points to a weak adapter, a damaged cable, heavy use while charging or a battery that can no longer hold charge. Knowing which pattern you have tells you where to start.
A deeply drained battery needs time
A battery that has run completely flat, or sat unused for weeks, can drop below the level the phone needs to start. The charging circuit then feeds it a very small current at first to bring it back safely, and the screen may stay dark during that time. Leave the phone on a known good charger and do not keep pressing the power button. After a while, a battery icon or light usually appears. If nothing shows after a long, patient charge, move on to the other checks.
Moisture detected warnings
Many phones check the charging port for moisture and block charging when they find it, because current across a wet port can corrode the metal contacts. The warning can appear after rain, a sweaty pocket or a humid bathroom. Unplug the cable, switch the phone off and leave it in a dry, airy place until the port dries naturally. Do not blow hot air into it or push anything inside. A wireless charger, if the phone supports one, avoids the port while you wait.
The port, the cable and the adapter
Pocket lint packs into the port over time and stops the plug seating fully, so it feels loose or only works at an angle. Switch the phone off and look inside with a torch. Lint can be eased out gently with a wooden toothpick, never a metal pin. Then swap one part at a time. Try a different cable with the same adapter, then a different adapter, then another wall socket. Changing one thing at once tells you exactly which part has failed.
- Works with another cable: the original cable is damaged inside, replace it.
- Plug feels loose or works at an angle: power off and clear lint.
- Nothing works with several chargers: suspect the charging board or the battery.
When it is the charging board or battery
If a known good charger and a clean, dry port still give nothing, the fault is inside. On many phones the port sits on a small charging board connected to the main board, and a worn or damaged one is a common repair. A battery at the end of its life may also stop accepting charge. If the phone bulges, the screen lifts or it gets hot when plugged in, stop charging it at once. Do not press on the battery, and take it for a check.
What to try, in order
- Plug the charger into a different wall socket and check the socket's switch is turned on.
- Leave a deeply drained phone on the charger for a long while before deciding it is dead.
- If a moisture warning appears, unplug it, switch the phone off and let the port dry naturally.
- Switch the phone off and look inside the port with a torch for lint or dirt.
- Ease out any lint gently with a wooden toothpick, never a metal pin or anything wet.
- Try a different cable, then a different adapter, changing only one part at a time.
- If nothing charges it, take the phone to a service centre to check the charging board and battery.
What to take from this
A phone that will not charge has usually lost one link in the charging chain, and the cheapest links fail most often. Give a flat battery time, let a wet port dry, clear lint with the phone switched off, and swap cables and adapters one at a time. If the phone still shows nothing on a charger you know works, the charging board or battery needs a technician, and any swelling means you stop charging it straight away.
Common questions
Why is my phone not charging when plugged in?
The usual causes are a faulty cable or adapter, lint packed into the port, moisture in the port, or a battery that has drained too far to show anything yet. Try another socket, cable and adapter one at a time, and check the port with a torch. If nothing works, the charging board may have failed.
Why does my phone say charging but the percentage does not go up?
Power is arriving, but not enough to outrun what the phone is using. A weak adapter, a damaged cable or heavy use while plugged in can cause this. Switch the screen off and try the original charger. If the level still does not rise, the battery may be worn and need replacing by a technician.
How do I get rid of the moisture detected warning?
Unplug the cable, switch the phone off and leave it somewhere dry and airy until the port dries on its own. Do not use a hair dryer, rice or anything pushed into the port. If the warning keeps returning when the port is clearly dry, the port may be corroded and needs a technician to look.
