Plugging in your iPhone and seeing nothing happen, or watching it charge painfully slowly, is frustrating, especially when you need your phone. The cause is often simple: a worn cable, a dirty charging port or a software setting that pauses charging. Sometimes it is a hardware issue that needs repair. This guide walks through twelve proven fixes for an iPhone not charging, from the quickest checks to signs you need professional help.
Quick checks first
| Symptom | Likely cause | First fix |
|---|---|---|
| No charging icon at all | Cable, adapter or port | Try another cable and adapter |
| Charges then stops at 80% | Optimized Battery Charging or charge limit | Check battery settings |
| “Accessory not supported” message | Damaged or uncertified cable | Use an MFi-certified or Apple cable |
| Charges very slowly | Low-power adapter, heat, background activity | Use a higher-wattage adapter, cool phone |
| Wireless charging doesn’t work | Case, alignment or charger issue | Remove case, realign |
| Phone is hot and charging paused | Temperature protection | Let it cool |
12 fixes for iPhone not charging
1. Try a different cable and adapter
Cables wear out, especially at the ends. Test with another Apple or certified cable and a different power adapter. Lightning iPhones need Lightning cables; iPhone 15 and newer use USB-C.
2. Try another power source
Plug into a different wall outlet, computer USB port or power strip. Computer ports often charge slower.
3. Clean the charging port
Lint and debris often pack into the port. Turn off the iPhone and use a flashlight to look inside. Gently remove debris with a wooden or plastic toothpick, or a soft, dry brush. Avoid metal objects and liquids.
4. Remove the case
Thick cases can prevent cables from fully seating, block wireless charging or trap heat.
5. Force restart your iPhone
For iPhone 8 and later: press and release Volume Up, press and release Volume Down, then press and hold the Side button until the Apple logo appears.
6. Check Optimized Battery Charging and charge limits
iOS may pause charging at 80% to reduce battery aging, especially overnight. Go to Settings, Battery, Charging (or Battery Health and Charging) to check Optimized Battery Charging or a set charge limit on newer models. This is normal behavior, not a fault.
7. Let it cool down
iPhones may pause charging when too hot or cold. If you see a temperature warning or charging is “on hold,” move the phone to a cooler place and remove the case. See why your phone gets hot while charging.
8. Update iOS
Software bugs can affect charging. Go to Settings, General, Software Update.
9. Check battery health
Go to Settings, Battery, Battery Health. If maximum capacity is low or Apple recommends service, the battery may need replacement.
10. Try wireless charging (or wired if wireless fails)
If wired charging fails but wireless works, the charging port may be damaged. If wireless fails, check alignment, remove the case and confirm the charger supports your model.
11. Check for liquid detection warnings
Newer iPhones show a warning if liquid is detected in the port. Unplug immediately, let the phone dry for at least 30 minutes or longer, and do not use heat or insert objects to dry it.
12. Reset settings or contact Apple
As a last software step, try Settings, General, Transfer or Reset iPhone, Reset, Reset All Settings (data stays). If charging still fails, contact Apple Support or an Apple Authorized Service Provider.
Wired vs wireless charging problems
| Issue | Wired fix | Wireless fix |
|---|---|---|
| No response | Different cable, clean port | Realign, remove case, restart |
| Slow | Higher-wattage adapter | Use a MagSafe or Qi2 charger, avoid heat |
| Intermittent | Replace cable, check port | Check charger power supply |
Signs you need a repair
- The charging port is visibly damaged or loose
- Charging only works at certain cable angles
- The phone gets very hot when charging
- The battery is swollen or the screen is lifting
- Battery health is low and the phone shuts down unexpectedly
- No charging method works after all fixes
Do not try to open your iPhone yourself. Use Apple or an authorized repair provider.
Charging safety tips
- Use Apple or MFi-certified cables and reputable adapters.
- Avoid charging under pillows or blankets.
- Do not charge in very hot cars or direct sunlight.
- Replace frayed or damaged cables.
- Unplug if the charger or phone becomes unusually hot.
Real examples
The lint problem. Jake’s iPhone stopped charging. He found a packed layer of pocket lint in the port. Cleaning it gently fixed the issue instantly.
The 80% mystery. Mia thought her phone was broken because it stopped at 80% overnight. It was Optimized Battery Charging working as designed.
The bad cable. Sam’s cheap gas station cable caused an “Accessory not supported” message. A certified cable solved it.
Frequently asked questions
Why is my iPhone plugged in but not charging?
Common causes include a faulty cable or adapter, a dirty port, temperature protection or software issues.
Why does my iPhone stop charging at 80%?
Optimized Battery Charging or a charge limit may pause charging to protect battery health.
Can I clean my iPhone charging port with a toothpick?
Yes, gently, with a wooden or plastic toothpick while the phone is off. Avoid metal and liquids.
How do I know if my iPhone battery needs replacing?
Check Battery Health in Settings. Low maximum capacity or a service message suggests replacement.
Is it safe to use non-Apple chargers?
Yes, if they are certified and from reputable brands.
Choosing the right charger for your iPhone
Not all chargers deliver the same speed. Here is a general guide:
| Charger type | Typical use | Notes |
|---|---|---|
| 5W USB-A cube (older) | Very slow charging | Fine overnight, slow during the day |
| 20W USB-C power adapter | Fast charging on many models | Common recommendation for recent iPhones |
| Higher-wattage USB-C adapters | Fast charging, also powers laptops | iPhone only draws what it supports |
| MagSafe charger | Magnetic wireless charging | Speed depends on model and power adapter |
| Qi2 wireless chargers | Magnetic wireless charging standard | Supported on newer iPhones |
| Basic Qi wireless pads | Slower wireless charging | Requires careful alignment |
| Car chargers | On the go | Choose USB-C PD models for faster charging |
Using a charger with higher wattage than your phone supports is generally safe; the iPhone controls how much power it accepts.
Lightning vs USB-C iPhones
iPhone 15 and later models use USB-C, while earlier models use Lightning. If you upgraded recently, old Lightning cables will not fit. Many USB-C cables work, but cheap, uncertified cables may charge slowly or fail. Look for cables from Apple or reputable brands that meet USB-IF standards. For Lightning iPhones, MFi certification indicates Apple-approved accessories.
Understanding iPhone charging behavior
Modern iPhones charge quickly up to around 80% and then slow down to protect the battery, a process often called trickle charging. This is normal. Charging may also slow or pause when:
- The phone is warm, especially while gaming or using navigation
- You are using the phone heavily while charging
- Optimized Battery Charging predicts you will not need a full charge yet
- A charge limit is set in battery settings
Seeing slower charging near the top of the battery is not a sign of a problem.
Battery replacement: what to know
If your battery health is low, a replacement often restores normal charging and battery life. Apple and authorized service providers offer battery replacements, with prices depending on your model and whether you have AppleCare+. Third-party repair shops may cost less, but non-genuine batteries can trigger warning messages in Settings and may not perform as well. Back up your iPhone before any repair; see how to back up iPhone to a computer.
What to do if your iPhone is completely dead
If your iPhone will not turn on at all after charging:
- Charge it for at least 30 minutes with a known-good cable and adapter. A deeply drained battery may need time before showing the charging screen.
- Force restart while plugged in.
- Try a different outlet and charger.
- Connect it to a computer to see if Finder or iTunes recognizes it.
- Contact Apple Support if it still does not respond, since the battery or another component may have failed.
Quick summary
When your iPhone won’t charge, start simple: try another certified cable and adapter, clean the port gently, remove the case, force restart and check whether Optimized Battery Charging, a charge limit or heat is pausing charging. Update iOS and check battery health. If nothing helps, or you see damage or swelling, get professional repair.
Final tip
Keep one known-good certified cable and adapter at home just for testing. When charging problems appear, swapping in your test charger instantly tells you whether the issue is your accessories or your iPhone, saving time and helping you avoid unnecessary repairs.
The bottom line
Most iPhone charging problems come from cables, adapters, dirty ports, temperature or battery settings. Try different chargers, clean the port, force restart, check Optimized Charging, update iOS and check battery health. If nothing works or you see physical damage, get professional repair. For related help, see how to back up iPhone to computer and how to fix phone overheating.
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