The most common reason your Samsung tablet won't charge is a dirty charging port or a worn cable
A Samsung tablet that won't charge usually stops because the charging port has collected lint, dust, or debris that blocks the connection between the cable and the tablet's charging pins. The second most common cause is a damaged charging cable — the connector end wears out from repeated bending and plugging in, or the cable itself develops an internal break. Less often, the tablet's battery has degraded so much it no longer holds a charge, or the charging circuit inside the tablet has failed.
The good news is that the first two problems are fixable at home with basic tools. The last two require a repair shop or replacement. Start by checking the cable and port before you assume the tablet itself is broken.
Key Takeaways
- Inspect your charging cable for visible damage — bent connectors, frayed wires, or cracks in the rubber coating — and test it with another Samsung device if you have one.
- Clean the charging port on your tablet with a dry toothpick or wooden stick to remove lint and dust, then try charging again.
- Try charging with a different cable and power adapter to rule out a faulty cable or wall charger before assuming the tablet is damaged.
- If the tablet charges slowly or only when held at an angle, the port is likely loose or corroded and needs professional repair.
- A tablet that gets warm while charging or won't charge at all after water exposure may have internal damage and should not be charged repeatedly.
Check the charging cable first
The charging cable is the easiest part to replace, so examine it closely before you move on to the tablet itself. Look at the connector end — the part that plugs into the tablet — for bent pins, cracks in the plastic housing, or corrosion that looks like green or white buildup. Bend the cable gently near the connector to see if the tablet suddenly starts charging; if it does, the cable has an internal break and needs to be replaced.
If you have another Samsung tablet or phone in your home, borrow its charging cable and try it on your tablet. If the borrowed cable works, you have found the problem. If the borrowed cable also fails to charge your tablet, the issue is with the tablet itself or the power adapter.
When you buy a replacement cable, make sure it is designed for your specific tablet model. Samsung tablets use different connector types — USB-C is standard on newer models, but older tablets may use micro-USB. Check your tablet's model number in Settings > About Tablet to confirm which type you need.
Clean the charging port on your tablet
Lint and dust accumulate in the charging port over time, especially if the tablet sits on fabric surfaces or in a bag with other items. This buildup prevents the cable connector from making full contact with the charging pins inside the port.
To clean the port, use a dry wooden toothpick or a plastic stick — never metal, which can damage the pins. Gently insert the toothpick into the port and scrape the sides and bottom to dislodge debris. Blow out any loose particles with your mouth or a can of compressed air held upright. Do not use water or cleaning liquid, as moisture can damage the charging circuit.
After cleaning, plug in your cable and see if the tablet charges. If it does, you are done. If it still does not charge, move on to testing the power adapter.
Test your power adapter and wall outlet
The power adapter — the brick that plugs into the wall — can fail without obvious signs. If you have another Samsung device, plug its power adapter into the wall and connect your tablet's cable to it. If the tablet charges, the original adapter is faulty and needs to be replaced.
If you do not have a spare adapter, try plugging your current adapter into a different wall outlet in another room. Some outlets stop working because the circuit breaker has tripped or the outlet itself is damaged. If the tablet charges in the new outlet, the original outlet is the problem.
When you replace the adapter, buy one rated for your tablet's voltage and amperage — this information is printed on the original adapter. Using an adapter with the wrong rating can damage the tablet's charging circuit.
What to do if the port is loose or corroded
If your tablet only charges when you hold the cable at a specific angle, or if you see green or white corrosion inside the charging port, the port itself is damaged. This usually happens from repeated plugging and unplugging, or from exposure to moisture.
A loose or corroded port cannot be repaired at home — it requires soldering or replacement by a repair technician. Contact Samsung support or visit an authorized repair center to get a quote. Depending on your tablet's age and the cost of repair, it may be cheaper to replace the tablet.
Do not continue charging a tablet with a corroded port, as the corrosion can spread to other components inside the device.
Signs that the battery or charging circuit has failed
If you have tested a working cable, a working adapter, and a clean port, and the tablet still will not charge, the problem is likely inside the device. A battery that has reached the end of its lifespan will no longer accept a charge, or the charging circuit that regulates power to the battery may have failed.
Watch for these warning signs: the tablet gets very warm (hot to the touch) while charging, the battery percentage does not increase after an hour of charging, or the tablet will not charge at all even with multiple cables and adapters. If the tablet was recently exposed to water or dropped, internal damage is likely.
These problems require professional repair or battery replacement. Contact Samsung support or take the tablet to an authorized repair center. Be honest about any water exposure or physical damage, as this affects the repair cost and warranty.
How to extend the life of your charging cable and port
Once you have fixed the charging problem, protect your cable and port from future damage. Avoid bending the cable sharply near the connector, and do not wrap it tightly around the tablet. Store the cable loosely in a drawer or cable organizer.
Keep the charging port clean by storing the tablet in a case or bag that closes, and avoid setting it on fabric surfaces where lint collects. If you notice the cable getting warm during charging, unplug it when ready — heat is a sign of internal damage developing.
Replace the cable every two to three years as part of routine maintenance, even if it still works. Cables degrade gradually, and replacing them before they fail prevents you from being without a working tablet.
Frequently Asked Questions
Can I charge my Samsung tablet with a phone charger?
Only if the phone charger uses the same connector type and has the same or higher amperage rating. A charger with lower amperage will charge very slowly or not at all. Check the connector type on both the phone charger and your tablet — if they match, you can try it, but buy the correct tablet charger as soon as you can.
What should I do if my tablet got wet and now won't charge?
Do not plug it in or attempt to charge it. Water inside the device can cause a short circuit that damages the charging circuit or battery. Let the tablet dry completely in a warm, dry place for at least 48 hours, then try charging with a cable you know works. If it still will not charge, the internal damage is likely permanent and you should contact a repair center.
Why does my tablet charge slowly even though the cable and adapter are fine?
Slow charging usually means the charging port is partially blocked by debris, or the battery is old and degraded. Clean the port as described above. If charging is still slow after cleaning, the battery may be nearing the end of its lifespan and will need to be replaced by a technician.
Is it safe to use a third-party charging cable?
Third-party cables work if they have the correct connector type and amperage rating, but they often fail faster than Samsung's original cables. Buy from a reputable brand and check the reviews before purchasing. Avoid extremely cheap cables, as they may have poor insulation and pose a fire risk.
How do I know if my tablet's battery is dead versus the charger being broken?
Test with a different cable and adapter first. If the tablet charges with the new cable and adapter, the original cable or adapter is broken. If it still does not charge, the battery or internal charging circuit is likely damaged, and you need professional repair.