Phone Not Charging? 12 Fixes (iPhone & Android)

You plug the phone in and nothing happens. No icon, no vibration, no percentage climbing. Or worse — it says it’s charging while the battery keeps dropping.

The instinct is to fear the worst: dead battery, dead phone, expensive repair. In reality, charging failures follow a strict order of likelihood, and the expensive causes sit right at the bottom of that list. Cables and adapters fail first, ports clog second, software glitches third — and only after those do batteries and charging circuits come into it. The twelve fixes below follow that order exactly, so you spend nothing before you have to.

Find Your Symptom

How to Fix a Phone That Won’t Charge

Fix 1: Give a Dead Battery 30 Real Minutes

Do this before anything else. A deeply discharged battery needs to build a minimum charge before the phone can even display the charging screen — and people give up at the five-minute mark constantly.

1. Plug into a wall socket (not a laptop, car, or power bank) with the original charger.
2. Leave it completely alone for 30 minutes — no button pressing, no unplugging to check.
3. After that, look for a battery icon or a red light. A red light means the battery is fully drained but the phone is alive.
4. Then hold the power button for a few seconds to boot.

Fix 2: The Three-Part Swap Test

The fastest diagnosis there is. Change one variable at a time and you’ll find the fault in two minutes.

1. Different cable — try a known-good one. Cables fail internally while looking perfect outside; this is the most common cause of all.
2. Different adapter — plug your cable into another power brick.
3. Different socket — test the outlet with a lamp or another device. Avoid cheap multi-way extension strips.
4. Whichever swap makes it work, that’s your faulty part. If none help, the problem is the phone — continue below.

Also skip laptop USB ports and car sockets while testing: they deliver far less power, and a phone can drain faster than it charges on them.

Fix 3: Watch for the “Check Charging Accessory” Warning

Google’s own guidance: this notification means the cable or adapter is damaged or unsupported, and it causes very slow charging or none at all.

1. Swap to a certified cable and adapter — MFi for iPhone, USB-IF certified for Android.
2. Uncertified accessories fail authentication and get throttled or blocked entirely — especially after software updates.
3. Check the cable ends for bent pins, fraying, or discolouration while you’re there.

Fix 4: Clean the Charging Port Properly

The biggest hardware cause, and it’s free to fix. Pocket lint compacts at the bottom of the port until the connector can’t seat fully — which is why the cable only works at certain angles.

1. Power the phone off first.
2. Shine a light into the port. You’ll usually see a grey plug of compressed fluff.
3. Use a wooden toothpick or plastic pick — never metal, which shorts contacts — and gently scrape along the inner walls, working the debris out rather than deeper.
4. Finish with a short puff of compressed air (dry port only), then push the cable fully home. A satisfying click means it’s seated.

Fix 5: Force Restart the Phone

The charging system is software too, and a crashed process can stop the phone accepting power.

1. Android: hold Power + Volume Down together for about 20 seconds (Google’s own instruction is to do this while plugged in).
2. iPhone: press and release Volume Up, press and release Volume Down, then hold the Side button until the Apple logo appears.
3. Plug back in and watch for the charging icon.
4. If the phone works but the percentage is stuck or wrong, a restart also resets the battery-level reporting.

Fix 6: Respect the Moisture Warning

Modern phones disable charging when they detect liquid in the port — after rain, sweat, a gym bag, or a steamy bathroom.

1. If you see “Moisture detected” or “Liquid detected in connector”, unplug immediately and don’t override it. Forcing a charge through a wet port is how ports corrode permanently.
2. Tap the phone gently against your palm with the port facing down, then leave it somewhere dry and airy for at least 30 minutes — several hours is better.
3. No rice, no hairdryer, no compressed air blasted into a wet port.
4. Wireless charging works safely in the meantime if your phone supports it.

Fix 7: Check for Liquid Damage

1. iPhone with a SIM tray: eject the tray and look inside for the Liquid Contact Indicator — a small white strip that turns red or pink after water exposure. (Newer eSIM-only models don’t have an accessible one.)
2. Android: look into the port for green residue, corrosion, or fogging.
3. Signs of liquid damage mean a repair conversation, not more troubleshooting — and mentioning the history helps the technician check the right components.

Fix 8: Test With a Wireless Charger

An excellent diagnostic if your phone supports it, because wireless bypasses the port completely.

• Charges wirelessly but not by cable: the fault is isolated to the port, the cable, or the connector — the battery is fine. That’s a cheap, specific repair.
• Neither works: suspicion shifts to the battery or charging circuit, which needs professional diagnosis.
• It also buys you time — you can keep using the phone while arranging a repair.

Fix 9: Fix Slow Charging

1. Use a higher-wattage adapter — modern phones want 20W or more; an old 5W brick will barely keep pace with the screen.
2. Don’t use the phone while charging; gaming or navigation can consume power faster than the charger supplies it.
3. Check for battery-saving or optimised-charging features (like an 80% limit or overnight scheduling) that pause charging by design — on iPhone: Settings → Battery → Charging.
4. Close background apps and check whether one is running hot.

Fix 10: Let It Cool Down

1. Phones pause or slow charging when hot — summer cars, direct sun, heavy use while plugged in.
2. Remove the case, move to shade, and wait 15 minutes before retesting.
3. A temperature warning on screen is your answer; nothing is broken.

Fix 11: Update the Software

1. Android: Settings → System → Software update. iPhone: Settings → General → Software Update.
2. Charging-management bugs are real and get patched — Apple shipped fixes for an iPhone 17 charging quirk in iOS 26 point releases, covered in our iPhone 17 not charging guide.
3. Battery too low to update? Charge wirelessly or on a wall charger first.

Fix 12: Check Battery Health

1. iPhone: Settings → Battery → Battery Health & Charging — below about 80% maximum capacity, the battery is worn and a replacement is reasonable.
2. Android: some brands show battery health in Settings → Battery or a device-care menu; otherwise a free monitoring app can show charging current and confirm whether power is flowing at all.
3. A swollen battery — a screen lifting from the frame, or a phone that no longer sits flat — means stop charging immediately and get it serviced. That’s a safety issue, not an inconvenience.

When to Stop and Get It Repaired

• The port feels loose or wobbly, or the cable falls out under its own weight — that’s a worn port, and it’s one of the cheaper repairs available.
• Visible corrosion, a burnt smell, or heat when plugged in — unplug and stop. Don’t keep testing.
• Nothing charges it: not a different cable, not a different adapter, not wireless. That points at the battery or charging circuit.
• Check warranty first. Phones under a year old — and anything under AppleCare+ or a manufacturer extension — get this fixed free. Never pay a third-party shop while coverage exists.
• Back up now, while it still powers on. A phone with charging trouble can become a phone you can’t switch on, and a current backup turns that from a disaster into an errand.

Related Guides on MozPK

Charging and power

• iPhone 17 not charging (including the iOS 26 wireless kickstart)
• Android battery draining fast after an update
• iPhone won’t turn on / black screen
• Android power button not working (restart without it)

Ports, cables, and connections

• Android Auto not connecting via USB (cable and port diagnostics)
• Headphones not working on iPhone (port cleaning)
• iPhone Could Not Be Restored (Error 4013)

Frequently Asked Questions

Why is my phone plugged in but not charging?

Most often a faulty cable, a weak or damaged adapter, or lint compacted in the charging port. Swap the cable, adapter, and socket one at a time, then clean the port with a wooden toothpick while the phone is powered off.

How long should I charge a completely dead phone before worrying?

At least 30 minutes on a wall charger. A deeply discharged battery charges silently before the screen shows anything, and giving up early is the most common mistake.

Why does my phone charge wirelessly but not with a cable?

The battery is fine — the fault is in the cable, the port, or the port’s connector. Clean the port, swap cables, and if it persists, a port replacement is a relatively inexpensive repair.

Is it safe to charge a phone showing a moisture warning?

No. Charging a wet port can corrode the contacts permanently. Dry the phone with the port facing down for at least 30 minutes, and use wireless charging in the meantime if available.

How do I know if my battery needs replacing?

On iPhone, check Settings → Battery → Battery Health & Charging — under about 80% maximum capacity indicates real wear. On any phone, rapid draining plus slow charging points the same way. A swollen battery lifting the screen needs immediate service.

Can a software update fix charging problems?

Yes — charging management is software, and manufacturers patch charging bugs regularly. Update the phone before assuming hardware failure, particularly if the trouble started right after a previous update.