Start with the cable and power adapter

The charging cable and power adapter fail far more often than the phone itself. Before you assume your phone is broken, test whether the problem is actually the cable or adapter.

Unplug the cable from both the phone and the power adapter. Look at the cable where it connects to the adapter — bend it gently in different directions while watching for any visible cracks, fraying, or exposed wires. Do the same where the cable connects to the phone. If you see damage, the cable is the problem and needs to be replaced.

If the cable looks fine, borrow a charging cable and adapter from someone with the same phone type as yours. Plug the borrowed cable and adapter into your phone. If your phone charges with the borrowed equipment, your original cable or adapter is faulty and you need a replacement. If your phone still does not charge, move to the next step.

Key Takeaways

  • Most charging problems come from a damaged cable or adapter, not the phone itself, so test with borrowed equipment before assuming the phone is broken.
  • Lint and debris inside the charging port block the connection, and you can clear it with a wooden toothpick or plastic pick — never metal.
  • If your phone charges only when held at an angle, the port has internal damage and will need professional repair.
  • Restarting your phone can fix charging problems caused by software glitches, and force-restarting works when a normal restart does not.
  • If nothing works and your phone is under warranty, contact the manufacturer before paying for repairs.

Clean the charging port

Lint, dust, and debris accumulate inside the charging port over time and prevent the cable from making a solid connection. This is one of the most common reasons a phone stops charging.

Turn off your phone completely. Take a wooden toothpick or a plastic phone cleaning pick and gently scrape the inside of the charging port. Work slowly and do not force anything — you are removing loose debris, not digging. Shine a flashlight into the port as you work so you can see what you are removing. Never use a metal object, as metal can damage the port or cause a short circuit.

After cleaning, wait a few minutes, then plug in your cable and try charging again. If your phone charges normally now, the port was straightforward blocked. If it still does not charge, continue to the next step.

Restart your phone

Software glitches can prevent your phone from recognizing the charger even when the hardware is working. A restart clears these glitches and often restores charging.

On most Android phones, hold the power button for 10 seconds until the phone turns off, then press the power button again to turn it back on. On iPhones, the restart method depends on your model — if you have a home button, hold the top button and home button together until you see the power-off slider, then slide to power off and turn it back on. If you have no home button, hold the volume up button and side button together until the slider appears, then slide to power off.

After the restart completes, plug in your charger and wait a few minutes to see if charging begins. If restarting does not work, try a force restart — hold the power button longer (20 to 30 seconds on most phones) until the screen goes black and you see the startup logo appear. This forces the phone to restart even if it is frozen.

Check the charging port for physical damage

If your phone charges only when you hold the cable at a specific angle, or if the connection is loose and unstable, the charging port has internal damage. This usually means the metal contacts inside the port are bent or the port itself is cracked.

Look into the port with a flashlight. The metal contacts inside should be straight and evenly spaced. If they appear bent, pushed to one side, or if you see cracks in the plastic around the port, the port is damaged and needs professional repair. Do not attempt to fix this yourself — the contacts are too small and fragile to straighten without special tools.

Contact the phone manufacturer or visit an authorized repair center. If your phone is still under warranty, the repair may be covered at no cost. If it is out of warranty, ask for a repair quote before agreeing to the work.

Test with a different power source

Sometimes the problem is not your phone or cable, but the outlet or power source you are using. A wall outlet may be faulty, or a USB port on a computer may not be providing enough power.

Try plugging your charger into a different wall outlet in a different room. If your phone charges in the new outlet, the original outlet is faulty — have an electrician check it, or straightforward use a different outlet. If you were charging from a computer USB port, try a wall outlet instead. Wall outlets provide more power and charge faster than most computer USB ports.

If your phone charges in a different outlet, the problem is solved. If it still does not charge anywhere, the issue is with your phone, cable, or adapter, not the power source.

Check your phone's battery health

On some Android phones, you can see battery health information by dialing *#*#4636#*#* — this opens a hidden diagnostic menu. Look for battery health status. If it shows "unknown" or "poor," the battery itself may be failing and needs replacement.

iPhones do not have a hidden diagnostic code, but you can check battery health in Settings. Go to Settings, then Battery, then Battery Health & Charging. If the maximum capacity is below 80 percent, the battery is degraded. If it shows "Service Recommended," Apple is telling you the battery should be replaced.

A degraded battery may not charge fully or may charge very slowly. If battery health is poor and your phone is out of warranty, you can have the battery replaced by the manufacturer or an authorized repair center, usually for a flat fee.

Know when to seek professional repair

If you have tried all the steps above and your phone still will not charge, the problem is likely internal hardware damage that requires professional repair. This could be a damaged charging circuit, a failed battery, or damage to the port that cannot be seen from the outside.

Contact the phone manufacturer's support line or visit an authorized repair center. Bring your phone and explain what you have already tried — this helps the technician diagnose the problem faster. Ask for a repair estimate before authorizing any work. If your phone is still under warranty, check whether the damage is covered before paying.

If repair costs are very high and your phone is old, you may decide it is more practical to replace the phone than to repair it. Compare the repair cost to the price of a new or refurbished phone of the same model to make the best decision for your situation.

Frequently Asked Questions

Can I use any USB cable to charge my phone?

Not all cables work with all phones. iPhones require a Lightning or USB-C cable depending on the model. Android phones use either USB-C or micro-USB. Using the wrong cable type will not charge your phone at all. Check your phone's manual or the manufacturer's website to confirm which cable type your phone needs.

Why does my phone charge slowly?

Slow charging usually means the cable or adapter is damaged, the charging port is partially blocked with lint, or the battery is degraded. Try cleaning the port and testing with a different cable and adapter. If charging is still slow, check battery health as described above. Older batteries naturally charge more slowly than new ones.

Is it safe to use a third-party charger?

Third-party chargers are safe if they are certified by the phone manufacturer or carry certification from a recognized standards body like UL or CE. Cheap uncertified chargers can damage your phone's battery or charging circuit. When buying a replacement cable or adapter, look for the manufacturer's name or a certification mark on the packaging.

What should I do if my phone gets hot while charging?

Some warmth during charging is normal, but if the phone is too hot to hold comfortably, stop charging when ready. Unplug the cable and let the phone cool down. Excessive heat during charging usually means the battery is failing or the charger is faulty. Do not continue using that charger — test with a different cable and adapter. If the phone still gets hot, the battery may need replacement.

Can I charge my phone overnight without damaging it?

Modern phones are designed to stop charging once the battery reaches 100 percent, so leaving it plugged in overnight will not overcharge the battery. However, keeping the battery at 100 percent for long periods does cause slow degradation over time. If you charge overnight regularly, your battery will degrade faster than if you unplug once it reaches full charge. For longer battery life, unplug as soon as charging completes.