Phone Not Charging? Causes and Fixes

A phone not charging is usually caused by something small and fixable: lint packed into the port, a worn-out cable, a weak adapter, or a battery-protection feature doing exactly what it was designed to do. Here’s how to find the cause on an iPhone, Pixel, or Samsung Galaxy, and when to hand it to the manufacturer.

TL;DR

Swap one thing at a time: try a different cable, a different adapter, and a different wall outlet before assuming the phone is broken.
Shine a flashlight into the charging port. Packed lint is one of the most common reasons a plug won’t seat fully.
Stuck at 80%? That’s usually Optimized Battery Charging (iPhone), Adaptive Charging (Pixel), or Battery protection (Samsung), not a fault.
A liquid or moisture warning means unplug and let it air-dry. No rice, no hair dryer, nothing poked into the port.
If the phone won’t charge on known-good gear after a restart and a clean port, book a repair with Apple, Google, or Samsung.

Why Your Phone Is Not Charging
Symptoms at a Glance
How to Fix a Phone That Won’t Charge
What Not to Do
When to Call a Professional
How to Prevent It
FAQ

Why Your Phone Is Not Charging

Lint and Debris in the Charging Port

Every time you plug in, pocket lint gets pushed deeper until it forms a compressed pad. The plug then can’t fully reach its contacts, so charging is intermittent or never starts. A plug that feels loose or won’t click in is the classic clue.

A Damaged Cable or Underpowered Adapter

Cables usually fail at the strain point near either plug. Apple says not to use any cable or adapter with visible damage such as breaks or bent prongs. Samsung notes that non-genuine or damaged accessories can cause slow charging or no charging at all.

Adapter wattage matters too. Google recommends a 30-watt USB-C adapter (or a PPS adapter of at least 30 W) for Pixel phones, and says other USB Power Delivery adapters of 15 W or more will work at varying speeds. An old 5-watt cube or a laptop USB port will charge slowly.

A Dead Wall Outlet or Power Strip

Outlets controlled by a wall switch, a tripped power strip, or a circuit that’s lost power all look like a charging failure. If several outlets in one room went dead at once, see our guide on why a circuit breaker keeps tripping.

Liquid or Moisture Detected

iPhones and water-resistant Samsung phones check the port for moisture. Samsung phones won’t charge through the cable while moisture is present, which protects the pins from corrosion. An iPhone shows a liquid-detection alert and asks you to unplug.

Battery-Saving Features That Pause at 80%

All three major brands slow or hold charging around 80% on purpose to reduce battery wear. Apple’s Optimized Battery Charging learns your routine and waits to finish past 80% until shortly before you usually unplug. iPhone 15 and later models also have a Charge Limit you can set anywhere from 80% to 100% in 5% steps.

Pixel phones with Adaptive Charging slow noticeably above 80%, which Google describes as expected. Samsung’s Battery protection setting can stop charging early or cap the maximum level.

Temperature Limits

Phones warm up while charging, but if the battery gets too hot, software steps in. Apple says an iPhone may limit charging above 80% until it cools, and Samsung says charging may pause or slow when the phone overheats. Heat hurts other electronics the same way, as our guide on why a laptop overheats explains.

Software Glitches

A frozen charging process or a background app pegging the processor can make a phone look like it isn’t charging. A restart or a system update clears most of these.

Wireless Charger Misalignment or a Thick Case

Wireless charging only works when the coil in the phone lines up with the coil in the pad. Google says to center the phone, remove the case, and take off metal or magnetic add-ons such as ring holders, MagSafe accessories, and PopSockets.

An Aging Battery

Lithium-ion batteries are consumables. Apple designs iPhone 14 and earlier batteries to keep 80% of original capacity after 500 full cycles under ideal conditions, and iPhone 15 models for 1,000 cycles. A worn battery drains faster and may shut down unexpectedly in the cold.

Symptoms at a Glance

Symptom	Likely cause	DIY or pro?
Plug feels loose or charging cuts in and out	Lint in the port or a worn cable	DIY
Nothing happens on any outlet	Bad cable or adapter	DIY: swap accessories
Works in one room, not another	Dead or switched outlet	DIY; electrician if a whole circuit is out
Stops at 80% overnight	Optimized, Adaptive, or protective charging	DIY: settings change
Liquid or moisture warning	Wet port	DIY: air-dry
Charging pauses when phone is hot	Temperature limit	DIY: cool it down
“Accessory Not Supported” or “Check charging accessory”	Damaged or uncertified accessory, dirty port	DIY first
Wireless pad charges slowly or not at all	Misalignment, case, magnetic accessory	DIY
Won’t charge on known-good gear after all steps	Damaged port, battery, or board	Pro: manufacturer repair
Battery swelling, screen lifting, burning smell	Failing battery	Pro, right away

How to Fix a Phone That Won’t Charge

Tools and parts: a flashlight, a wooden or plastic toothpick, a second known-good cable and adapter (borrow one if needed), and a lamp or other device to test the outlet.

Safety: Unplug the cable before inspecting or cleaning the port, and power the phone off first. Never handle chargers with wet hands, and never use a charger with a cracked case or bent prongs.

Step 1: Test the Outlet

Google suggests plugging a lamp or another device into the same outlet to confirm it has power. Apple says a wall outlet gives the best results, so skip power strips and computer ports for this test.

Step 2: Swap the Cable and Adapter

Charge another phone or device with your cable and adapter to see if they work. Then try a different cable with your adapter, and a different adapter with your cable, so you know exactly which piece failed. Push every connection in firmly.

On a Pixel, a “Check charging accessory” notification means the cable or adapter may be damaged or unsupported. On an iPhone, an “Accessory Not Supported” alert can point to a damaged accessory, a dirty port, or a USB charger not designed for phones.

Step 3: Inspect and Clean the Port

Power the phone off and shine a flashlight straight into the port. Samsung suggests gently blowing air into it to loosen dust. If you see a gray or dark pad at the back, use a wooden or plastic toothpick to gently loosen it.

Use light pressure and tip debris out toward the opening. Never use a metal pin, paper clip, or SIM tool, which can short or bend the contacts.

Step 4: Remove the Case and Check Accessories

Google recommends taking off the case so it doesn’t block the plug or a wireless charger. On iPhone, Apple suggests connecting directly to the charger with no adapters or dongles in between.

Step 5: Restart and Give It Time

Restart the phone if it’s on. If an iPhone won’t turn on, Apple says to charge it for half an hour, force restart it, then charge for another half hour. On iPhone 8 or later, press and release volume up, press and release volume down, then hold the side button until the Apple logo appears.

Google says a Pixel with a fully drained battery may show no sign of life for up to 25 minutes while plugged in. If there’s no battery icon after that, hold the Power button for about 35 seconds to force a reboot.

Step 6: Dry Out a Wet Port

If you see a liquid or moisture warning, unplug both ends of the cable. Apple says to tap the iPhone gently against your hand with the port facing down, leave it somewhere dry with airflow, and wait at least 30 minutes before trying again. Full drying can take up to 24 hours.

Samsung says water usually evaporates from the port in about 1 to 2 hours. If something other than fresh water got in, such as salt water or soda, Samsung advises rinsing the port with fresh water and drying it with a soft cloth. Moisture in the port doesn’t block wireless charging, but dry the whole phone before setting it on a pad.

Step 7: Check the 80% Settings

On iPhone 15 and later, go to Settings > Battery > Charging to see the Charge Limit and Optimized Battery Charging. On iPhone 14 and earlier, it’s under Settings > Battery > Battery Health & Charging. To top off right now, touch and hold the Lock Screen charging notification and tap Charge Now.

On a Samsung Galaxy, open Settings > Battery > Battery protection to change or turn off the cap. While you’re there, check Settings > Battery > Charging settings and make sure Fast charging is on. Samsung notes fast charging may not work from a computer’s USB port.

Step 8: Cool It Down

If the phone feels hot, unplug it, take it out of the case, and move it out of direct sun. Google suggests keeping the screen off while charging and not blocking airflow around the charger.

Step 9: Fix Wireless Charging

Remove the case and any magnetic or metal accessories, then set the phone in the center of the pad. Google recommends a charger approved for your specific Pixel model and suggests Qi2-certified chargers for the most reliable results.

Step 10: Update the Software and Check Battery Health

Install any pending system update, since updates can fix charging bugs. If the download crawls, our guide on fixing slow Wi-Fi at home can help speed it up.

On iPhone, open Settings > Battery > Battery Health to see maximum capacity. If the battery has worn significantly, that screen shows a message recommending battery service.

What Not to Do

Don’t put anything metal in the port. Pins, paper clips, and SIM tools can bend contacts or short the circuit.
Don’t put a wet phone in rice. Apple warns that small rice particles can damage the iPhone.
Don’t use a hair dryer, heater, or compressed air to dry a wet port, and don’t stuff a cotton swab or paper towel into it.
Don’t charge with a wet port unless it’s a true emergency. Apple says corroded pins can cause permanent damage.
Don’t charge under a pillow, on a bed, or in a hot car, where heat builds up.
Don’t open the phone to swap the battery or port yourself. Modern phones are sealed and glued, and a punctured battery is a fire risk.

When to Call a Professional

For a phone, the pro is the manufacturer or an authorized repair shop. Check your warranty first, and contact them if you notice any of the following:

The phone won’t charge on two different known-good cables and adapters, even after cleaning the port and restarting.
A Pixel shows no response after 25 minutes on a working charger.
The phone rings when called but the screen stays black, which Google says calls for an authorized repair center.
A moisture warning won’t clear after a full day of drying.
The port pins look green, black, or bent, or the plug won’t stay in even with a clean port.
Battery Health shows a service message, or the phone shuts down unexpectedly with charge still showing.
The back or screen is bulging, the phone smells like burning plastic, or it gets too hot to hold. Unplug it, stop charging it, and keep it away from anything that can burn.

How to Prevent It

Pocket the phone port-side up and check the port with a flashlight every few months.
Buy cables and adapters from the phone maker or brands certified for your phone, such as Made for Google accessories for Pixel.
Unplug by gripping the plug, not the cord, and replace any cable that’s fraying at the ends.
Charge in a cool, open spot. Apple advises against charging or leaving the phone in hot conditions, including direct sun, for long periods.
Leave Optimized Battery Charging, Adaptive Charging, or Battery protection turned on. They slow battery aging.
Keep the phone updated so charging fixes from the manufacturer reach you.

FAQ

Why is my phone plugged in but not charging?

The most common causes are lint in the port, a damaged cable, a weak adapter, or an outlet with no power. Test each piece separately and clean the port gently with a wooden or plastic toothpick.

Why does my iPhone stop charging at 80%?

Usually it’s Optimized Battery Charging, which holds at 80% until shortly before you typically unplug. On iPhone 15 and later, a Charge Limit may also be set. Heat can cause the same pause, and charging resumes once the phone cools.

How do I clean my phone’s charging port safely?

Turn the phone off, look inside with a flashlight, and gently loosen lint with a wooden or plastic toothpick. Never use metal objects. If the port is wet, just let it air-dry.

How long does it take for a “moisture detected” warning to go away?

Samsung says water typically evaporates from the port in about 1 to 2 hours. Apple says to wait at least 30 minutes and allow up to 24 hours for an iPhone to dry fully.

Why is my phone charging so slowly?

Slow charging usually means a low-wattage adapter, a computer USB port, a hot phone, or heavy use while plugged in. On Samsung phones, check that Fast charging is turned on. On wireless pads, center the phone and remove the case and any magnetic accessories.

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