Start with the cable and power adapter
The problem is almost always the cable, the adapter, or the port — not the battery itself. Before you assume your iPhone is broken, test each part separately.
Inspect the Lightning cable (or USB-C cable on newer models) for visible damage: fraying, bent connectors, or cracks in the rubber coating. Bend the cable gently near both ends where stress concentrates. If you see damage, the cable needs replacement. Even small cracks let moisture in and stop charging.
Borrow a different cable and adapter from someone with the same iPhone model and try charging. If your phone charges with their cable but not yours, your cable or adapter is the problem. If it still won't charge, move to the next step.
Key Takeaways
- Test with a different cable and power adapter first — these fail far more often than the phone's charging port or battery.
- Clean the Lightning or USB-C port with a dry cotton swab or soft brush, because lint and debris block the connection completely.
- Force restart your iPhone by pressing and releasing volume up, then volume down, then holding the side button until the Apple logo appears.
- If none of these steps work, the charging port itself may be damaged and requires professional repair from Apple or an authorized technician.
- Wireless charging can work as a temporary solution if your iPhone supports it, even if the wired port is damaged.
Clean the charging port
Lint, dust, and debris accumulate inside the Lightning or USB-C port and prevent the connector from making full contact. This is the second most common reason iPhones won't charge.
Use a dry cotton swab or a soft-bristled brush (like a clean toothbrush) and gently brush inside the port. Do not use water, compressed air, or metal objects — water can damage internal components, compressed air can force debris deeper, and metal can scratch the connectors. Work slowly and let any loose debris fall out naturally.
After cleaning, try charging again with your original cable. If the phone charges now, you are done. If not, continue to the next step.
Force restart your iPhone
Sometimes the iPhone's software gets stuck and stops responding to the charger even though the hardware is fine. A force restart clears this without erasing anything on your phone.
The steps depend on your iPhone model. On iPhone 8 and newer: press and quickly release the volume up button, press and quickly release the volume down button, then hold the side button (power button) until you see the Apple logo appear on screen — this takes about 10 seconds. Keep holding even after the "slide to power off" message appears. On iPhone 7 and 7 Plus: hold both the volume down button and the side button together until the Apple logo appears. On iPhone 6s and earlier: hold both the top (or side) button and the home button together until the Apple logo appears.
After the restart completes and your phone turns back on, plug it in and check whether it charges. If it does, the problem was a software glitch.
Check for water damage or physical damage
If your iPhone was recently dropped, exposed to water, or exposed to humidity, the charging port or internal components may be damaged. Water damage is not always visible from the outside.
Look at the liquid contact indicator inside the SIM card tray (a small white or silver sticker). If it is red or pink, water has entered the phone. Even if the indicator looks normal, water can still damage the charging circuit without triggering the indicator.
If you suspect water damage, do not keep plugging in the charger — this can cause a short circuit. Let the phone dry completely in a warm, dry place for at least 48 hours before trying again. Do not use a hair dryer or oven, as heat can damage the battery and screen.
Try wireless charging if your iPhone supports it
If your iPhone has wireless charging (iPhone 8 and newer), you can charge wirelessly even if the wired port is damaged. Place the phone on a wireless charging pad or stand that supports Qi charging.
Wireless charging is slower than wired charging — typically 5 to 10 watts compared to 20 to 30 watts with a cable — but it works as a temporary solution while you arrange a repair. Remove any thick phone case, as some cases block the wireless signal.
Wireless charging does not fix the underlying problem, but it keeps your phone usable until you can get the port repaired.
When to get professional repair
If you have tried a different cable and adapter, cleaned the port, force restarted the phone, and ruled out water damage, the charging port itself is likely damaged or the charging circuit inside the phone has failed. This requires professional repair.
Contact Apple Support or visit an Apple Store to arrange a repair. Bring your phone and proof of purchase if you have it. Apple can diagnose the exact problem and tell you the repair cost and timeline. If your iPhone is still under warranty or covered by AppleCare+, the repair may be free or discounted.
If you do not have access to an Apple Store, search for "authorized Apple repair" in your area — these shops can perform the same repairs and often have faster availability.
Prevent charging problems in the future
Keep the charging port clean by storing your phone in a pocket or bag without loose lint. Use a protective case that covers the port opening or use a port cover when the phone is not charging.
Avoid exposing your iPhone to water, humidity, and extreme temperatures. If the phone does get wet, dry it when ready and wait before charging. Replace your cable if you notice any damage — a damaged cable is cheap to replace compared to repairing a phone.
Use the original Apple cable or a certified third-party cable (look for "Made for iPhone" certification). Cheap knockoff cables can damage the port over time.
Frequently Asked Questions
Why does my iPhone charge with one cable but not another?
The cable you are using is likely damaged or defective. Even small internal breaks in the wire can stop charging. Try the working cable with a different power adapter to confirm the cable is the problem, not the adapter.
Can I use a different brand's charger with my iPhone?
Yes, as long as it is certified for iPhone use (look for "Made for iPhone" or "MFi certified" on the packaging). Non-certified chargers may charge slowly or damage the port over time. Avoid very cheap third-party chargers.
What does it mean if my iPhone shows a lightning bolt but won't charge past a certain percentage?
This usually means the battery itself is failing, not the charging port. The phone recognizes the charger is connected (the lightning bolt icon) but the battery cannot hold a charge. This requires a battery replacement from Apple or an authorized technician.
Is it safe to use my iPhone while it is charging?
Yes, it is safe. Modern iPhones have built-in protection that stops overcharging. However, using the phone while charging generates heat, which can slow the charging speed and stress the battery slightly over time. If you want to charge as quickly as possible, avoid heavy use while plugged in.
Can I charge my iPhone with a fast charger meant for Android phones?
Only if it has a USB-C port and your iPhone is a newer model with USB-C (iPhone 15 and newer). Older iPhones with Lightning ports need a Lightning cable. Using the wrong connector type can damage the port.