Your phone stops charging because of a broken cable, a dirty charging port, a software problem, or a battery that has failed — and most of these you can fix yourself in under five minutes
When your phone plugs in but the battery stays at zero, the problem is almost always one of four things: the cable or charger is damaged, the charging port is blocked by lint or corrosion, the phone's software is stuck, or the battery itself has worn out. The good news is that the first three are cheap and quick to solve. The bad news is that you need to test them in order, because fixing the wrong thing wastes time.
Start by trying a different cable and charger — not just a different cable with the same charger, but a completely different charger from another device if you have one. If your phone charges with the new charger, your original cable or charger is the problem and you can replace it. If it still does not charge, move to the next step.
Key Takeaways
- A broken cable is the most common reason a phone will not charge, and you can test this by borrowing a different charger from a friend or trying one you own from another device.
- Lint and corrosion inside the charging port block the connection, and you can clean it with a dry toothpick or wooden stick — never use water or metal.
- Restarting your phone or forcing it to shut down and restart can fix software glitches that prevent charging from starting.
- If your phone is more than three years old and none of these steps work, the battery itself may have failed and will need to be replaced by a technician.
Clean the charging port with a dry tool
The charging port on the bottom or side of your phone collects lint, dust, and sometimes corrosion from moisture. This buildup prevents the charger from making a solid connection, even though the port looks fine to your eye. You can clean it yourself with a dry toothpick, wooden stick, or the plastic pick that comes with some phone repair kits.
Turn off your phone first. Use the toothpick to gently scrape the inside walls of the port, working slowly and being careful not to push debris deeper. You are looking for a small metal contact strip inside the port — do not poke it hard. Blow out the loosened lint with your mouth or a can of compressed air held at least six inches away. Do not use water, rubbing alcohol, or any liquid, because moisture inside the port can cause corrosion or short circuits.
After cleaning, wait a few minutes before plugging in the charger. If the port was wet from cleaning, let it dry completely. Then try charging again with your original charger. If it works, you are done. If it still does not charge, move to the next step.
Force your phone to restart
Sometimes the phone's software gets stuck and stops recognizing that a charger is plugged in, even though the hardware is fine. A forced restart clears this glitch without erasing your data. The steps differ depending on whether you have an iPhone or Android phone.
For iPhone: Press and release the volume up button, then press and release the volume down button. Now press and hold the side button until you see "slide to power off" on the screen. Let go and slide to power off. Wait 30 seconds, then press and hold the side button again until the Apple logo appears. This usually takes 10 to 15 seconds.
For Android: Press and hold the power button for 10 to 15 seconds until the phone vibrates and the screen goes black. Let go and wait 30 seconds. Then press the power button again to turn it back on. If your phone has a separate power button and volume button, hold both at the same time for 10 seconds instead.
After the restart, plug in your charger and wait two minutes. You should see a charging icon or a light on the phone. If you do, the problem was software and you are fixed. If nothing appears, the issue is hardware and you need to replace the battery or charger.
Check whether the charger itself is broken
If you have tried a different cable and charger and the phone still will not charge, the problem is not the charger — it is the phone's battery or charging circuit. But before you assume that, make sure the charger you are testing is actually working.
Plug the charger into a wall outlet and look for a light on the charger itself. Many chargers have a small LED that glows when power is flowing through them. If there is no light and you know the outlet works (test it with a lamp), the charger is dead. If the charger has a light or you cannot see one, try charging a different device with it — a tablet, another phone, or a wireless earbud case. If the other device charges, the charger works and the problem is your phone. If the other device does not charge either, the charger is broken.
What to do if nothing works
If you have tried a different charger, cleaned the port, restarted the phone, and it still will not charge, the battery or the charging circuit inside the phone has failed. This is not something you can fix at home. You will need to take the phone to a repair shop or the manufacturer's service center.
Before you go, write down the phone model and how old it is. If the phone is less than two years old and you bought it new, the battery may still be under warranty. Bring your receipt or proof of purchase if you have it. If the phone is older, a battery replacement usually costs between 50 and 150 dollars depending on the model, and takes one to three days.
While you wait for the repair, you can still use your phone on Wi-Fi if the battery has any charge left. Plug it in to a charger and leave it for 30 minutes — sometimes a completely dead battery needs time before it will show any sign of life. If it still shows nothing after 30 minutes, the battery is truly dead and needs replacement.
How to avoid this problem in the future
Most charging problems come from wear on the cable or port. You can slow this down by being gentle with the cable where it enters the phone. Do not bend it sharply or yank it out by the cable itself — always pull by the charger block. Keep the charging port dry and away from lint by storing your phone in a clean pocket or bag, not on the floor or near fabric that sheds.
If you use your phone while it charges, the battery heats up and wears faster. Charging overnight or leaving the phone plugged in after it reaches 100 percent also shortens battery life over time. If you can, unplug the phone once it is fully charged, and avoid using it for heavy tasks like gaming or video while it is charging.
Frequently Asked Questions
Can I use any charger with my phone?
Most modern phones use USB-C or Lightning cables, and chargers with the same connector will work. However, using a very old or very cheap charger can damage the battery or port over time. Stick with chargers from the phone maker or from brands that are certified for your phone model.
What if my phone gets hot while charging?
Some warmth is normal, but if the phone is too hot to hold, unplug it when ready. Heat damages the battery and can be a sign of a short circuit. Let it cool for 30 minutes, then try a different charger. If it heats up again, stop using that charger and take the phone to a repair shop.
Does leaving my phone plugged in overnight ruin the battery?
Modern phones have software that stops charging once the battery reaches 100 percent, so leaving it plugged in does not overcharge it. However, keeping the battery at 100 percent for hours does cause slow wear over time. If you charge overnight regularly, your battery will degrade faster than if you unplug once it is full.
Why does my phone charge slowly with some chargers?
Different chargers deliver different amounts of power, measured in watts. A charger from a tablet or an older phone may be slower than the charger that came with your phone. Using a slower charger will not damage anything, but it will take longer to reach 100 percent.
Can I charge my phone with a wireless charger if the port is broken?
Only if your phone supports wireless charging — most iPhones and some Android phones do. Wireless charging is slower than a cable, but it works even if the port is damaged. You can buy a wireless charging pad for 15 to 40 dollars.