Overview
Charging problems are frustrating but usually have simple, fixable causes — a dirty port, a worn cable or a software hiccup — long before the battery itself is to blame. This guide moves from the most common, no-cost fixes to the signs that indicate a genuine hardware issue.
Symptoms you might see
- The phone doesn't respond when plugged in, or shows no charging icon.
- Charging is very slow, or the battery percentage keeps dropping while plugged in.
- You see an 'accessory may not be supported' or 'liquid detected' alert.
- The cable only charges at a certain angle.
Possible causes
- Lint or debris compacted in the charging port.
- A frayed, damaged or uncertified cable.
- A weak power source such as a low-power USB port.
- A software glitch preventing charging.
- A liquid-detection safety hold, or a hardware fault in the port or battery.
Step-by-step troubleshooting
Work through these in order — the earliest steps are the safest and fix the most cases.
-
Clean the charging port
Power the phone off and inspect the port with a flashlight. Gently loosen and remove lint with a wooden or plastic toothpick. Compacted debris is the number-one cause of 'won't charge' — a clean port often fixes it instantly.
-
Swap the cable and adapter
Test with a different, undamaged cable and a wall adapter. Charge from a wall outlet rather than a computer or hub, which deliver less power. Prefer certified accessories to avoid the 'accessory not supported' alert.
-
Try another power outlet
Move to a wall socket you know works. Power banks and older USB ports can be too weak to charge reliably.
-
Force restart
A frozen charging process can be cleared with a force restart: Volume Up, Volume Down, then hold the Side button until the boot logo appears.
-
Dry the port if you see a liquid alert
If you see a 'liquid detected in the charging connector' warning, unplug and let the port air-dry — tap the phone gently against your hand with the port facing down. Do not use a hair dryer or insert anything into the port. Wait several hours before charging with a cable; wireless charging can be used in the meantime if supported.
-
Update the device software
Charging-related bugs are sometimes fixed in software. If the phone charges enough to reach settings, install any pending update.
-
Check battery health
In Settings, review your battery health and maximum capacity. A heavily degraded battery charges poorly and drains fast — a sign it may be near the end of its service life.
-
Get the port or battery serviced
If a clean port, new cable and force restart don't help, the charging port or battery may be faulty. A repair professional can test and replace either part.
Before you go further: back up your device to a cloud backup or a computer whenever possible. Steps that could affect your data are clearly flagged — and for suspected hardware faults, a qualified repair professional is the safest next step.
Prevention tips
- Keep the charging port covered from lint by cleaning it periodically.
- Use quality certified cables and replace frayed ones promptly.
- Avoid charging in very hot environments, which stresses the battery.
- Don't leave the phone charging under a pillow or thick bedding.
Frequently asked questions
Why does my device say 'charging on hold' or not charge overnight?
Optimised charging features may pause charging near full capacity to protect the battery, and heat can trigger a safety hold. If it never charges at all, clean the port and try a different cable first.
Is it the cable or the phone?
Test the same cable on another device and test another cable on your phone. If a known-good cable also fails, the issue is likely the port or battery rather than the cable.
Related guides
This website is an independent device support resource and is not affiliated with, endorsed by, or sponsored by any device manufacturer. All product names and trademarks are the property of their respective owners.