Why is my iPhone not charging?

Your iPhone may refuse to charge due to simple issues like debris in the port or a faulty cable, or deeper problems like software glitches or battery degradation. Most cases resolve with basic troubleshooting, starting with the easiest checks. Follow these steps to identify and fix the problem without needing tools or replacements right away.

Quick checks (try these first)

Inspect your charging cable for fraying, bent pins, or damage; swap it with another Apple-certified (MFi) cable if possible.
Examine the charging port with a flashlight for dust, lint, or debris; gently clean it using a wooden toothpick or soft brush—never metal objects.
Try a different wall adapter or power outlet to rule out a faulty adapter.
Restart your iPhone: press and hold the side button and a volume button until the power off slider appears, slide to shut down, wait 30 seconds, then power on.
Check if your iPhone shows a charging icon or battery percentage when plugged in; if not, proceed to detailed fixes.
Test wireless charging if your model (iPhone 8 or later) supports it—place it centered on a Qi-certified pad without a thick case.

Dirty or blocked charging port

Dust, lint, or pocket debris often accumulates in the Lightning or USB-C port, preventing a solid connection even if the cable seems fine. This is one of the most frequent causes, especially after carrying your iPhone in pockets or bags.[1][2][3][5]

Cleaning restores contact without risking damage, but avoid forceful methods to prevent scratching internal pins.

Power off your iPhone for safety.
Shine a flashlight into the port and use a wooden toothpick to gently scrape out visible lint—work slowly around the edges.
Blow out residue with compressed air or a soft brush; repeat if needed.
Reinsert the cable firmly and test charging; wiggle gently to ensure full connection.

Faulty or non-certified charging cable or adapter

Cables fray over time from bending or pulling, while cheap non-MFi adapters fail to deliver proper power, triggering safety cutoffs. Even undamaged-looking cables can degrade internally.[1][2][4]

Switching components isolates the issue quickly.

Test your cable with another iPhone or device to confirm it works.
Borrow or use a known-good Apple-certified cable (look for the MFi lightning bolt icon).
Plug into a different adapter and wall outlet—avoid power strips initially.
If wireless charging works but wired doesn't, the cable or port is likely faulty.

Overheating during charging

If your iPhone feels warm, it pauses charging to cool down, a built-in protection feature.[1]

Remove from case and place in a cool, ventilated spot.
Unplug for 10-15 minutes, then retry.
Avoid charging while using heavy apps or in direct sun.

Software glitches or iOS bugs

Temporary software hiccups, like frozen processes, can block charging detection even with working hardware. Restarts often clear these without data loss.[1][2][3]

Updating iOS addresses known charging bugs released by Apple.

Perform a force restart: for iPhone 8 or later, quickly press volume up, then volume down, hold side button until Apple logo; adjust for older models (volume down + side for iPhone 7, home + side for earlier).
Go to Settings > General > Software Update and install any available iOS version (check for iOS 18 or later as needed).
If unresponsive, connect to a computer and use Finder (Mac) or iTunes (PC) to update.

Battery health or optimized charging issues

Degraded batteries (below 80% capacity) struggle to charge, especially older iPhones, while Optimized Battery Charging intentionally limits to 80% for longevity.[1][2][3]

Check status first to avoid unnecessary worry.

Open Settings > Battery > Battery Health & Charging; note maximum capacity and if it says "Service."
Toggle off Optimized Battery Charging and charge to 100% overnight.
If capacity is under 80%, charging may be slow or intermittent—consider replacement after other fixes.

Wireless charging problems

For iPhone 8 and newer models, misalignment, thick cases, or incompatible pads prevent Qi wireless charging.[1][2][4]

This bypasses wired port issues for testing.

Remove case, credit cards, or metal objects from the back.
Center the iPhone on a Qi-certified pad plugged into power.
Wait 10 seconds for the charging icon; if it vibrates but doesn't charge, reposition slightly.
Test wired charging afterward to compare.

Moisture or liquid damage

Water exposure triggers liquid detection alerts, disabling charging to prevent short circuits. Even dried moisture lingers in ports.[4]

Drying takes time; forcing it risks corrosion.

Check for moisture icons near the port or in Settings > General > About.
Power off, wipe dry, and place in a dry area with silica packets for 24-48 hours.
Avoid heat sources like rice or hairdryers.
Test after full dry time; persistent issues indicate internal damage.

When to call a professional

Seek Apple Support or an authorized service if basic fixes fail, especially for hardware faults like port damage or battery failure. Don't delay if under warranty.

Battery health shows "Service" or below 80% capacity with no improvement.
No charging via wired or wireless after cleaning and restarts.
Physical damage, burn marks, or swelling near the battery.
Liquid damage persists after 48 hours drying.
iPhone won't power on at all.

Frequently asked questions

Why does my iPhone say "Charging Slowly"?

This appears with low-power sources like computer USB ports or damaged cables; use a 20W+ wall adapter and certified cable for full speed.

My iPhone charges to 80% then stops—what gives?

Optimized Battery Charging holds at 80% to extend battery life; disable it in Settings > Battery > Battery Health & Charging for full charges.

Will cleaning the port void my warranty?

Gentle cleaning with non-metal tools doesn't void warranty; avoid liquids or excessive force.

Can a case cause charging issues?

Thick or metal cases block wireless charging and overheat wired; remove during charging.

iPhone 15 won't charge—USB-C specific?

Ensure USB-C cable is rated for charging (some data-only); clean port and test adapters like older models.

Does restarting delete my data?

No, standard or force restarts are safe and preserve all photos, apps, and settings.