iPhone Not Charging or Charging Slowly? Causes and Fixes
From screen and battery replacements to other mobile repairs, LYK Repair has you covered. WhatsApp us for a quick quote and expert assistance.
CATEGORIES
Most iPhone charging problems come down to four things: a faulty cable or adapter, lint stuck in the charging port, heat, or a charging feature working as designed. Start by reading any message on your screen, then try a different Apple or certified cable and adapter, check the port for lint with a torch, and restart your iPhone. If it only charges at an angle, keeps showing “Liquid Detected” when dry, or doesn’t charge with any cable, the charging port or battery likely needs repair.
Key takeaways
- Check the message first. “Charging On Hold”, “Liquid Detected” and “Accessory Not Supported” each point to a different cause.
- Stuck at 80% is usually normal. Optimised Battery Charging, a charge limit or heat can all pause charging around that point.
- Lint is the most common hidden culprit. Pocket fluff packs into the port until the cable can’t seat properly.
- Never charge a wet iPhone. Let the port dry fully first.
- Charges only at an angle? That’s a classic sign of a worn charging port, and a quick repair.
| What you’re seeing | Most likely cause | What to do |
|---|---|---|
| Not charging at all | Faulty cable or adapter, or lint in the port | Try another cable and adapter, then check the port |
| Charges only at a certain angle | Worn port or lint | Clean the port gently; if that doesn’t help, the port needs repair |
| “Liquid Detected” alert | Moisture in the port or on the cable | Unplug, dry the phone, wait before charging |
| “Charging On Hold” | iPhone too hot or too cold | Move somewhere cooler, take off the case, let it cool |
| Stops at 80% | Optimised Battery Charging or a charge limit | Check Settings → Battery → Charging |
| “Accessory Not Supported” | Damaged or uncertified cable, or dirty port | Use an Apple or MFi-certified cable; clean the port |
| Charging very slowly | Low-power adapter, heat or heavy use while charging | Use a 20W or higher USB-C adapter; avoid using the phone while charging |
| Wireless or MagSafe not charging | Thick case, misalignment or heat | Remove the case, realign, and check the charger works with another device |
| Battery drops even when plugged in | Worn battery or weak adapter | Check Battery Health; try a stronger adapter |
Step 1: Read what your iPhone is telling you
Before you buy a new cable, look at the Lock Screen and at Settings → Battery. iOS often tells you exactly why charging has paused.
“Charging On Hold”
Your iPhone protects its battery by slowing or pausing charging when it gets too hot or too cold. You may see a message on the Lock Screen saying charging will resume when the iPhone returns to normal temperature.
In Singapore, this usually happens when:
- you’re charging in a car under the sun
- you’re gaming or using GPS while plugged in
- the phone is charging under a pillow or inside a thick case
Unplug, take off the case, move somewhere cooler and give it a few minutes. Charging resumes on its own.
Stuck at 80%
This is very often normal behaviour, not a fault. On newer iPhones there are three different reasons charging stops early:
- A charge limit you’ve set. On iPhone 15 and newer, you can choose a limit of 80%, 85%, 90%, 95% or 100%.
- Optimised Battery Charging. It may pause around 80% if iOS expects the phone to stay plugged in for a while, such as overnight.
- Heat. A temperature hold can happen at any percentage.
Battery settings show which one is responsible. To check or change your limit on iPhone 15 and newer, go to Settings → Battery → Charging.
“Liquid Detected”
From the iPhone XS onwards, your iPhone can warn you if there’s liquid in the Lightning or USB-C connector. When this happens, charging and accessories are blocked until the connector, cable and accessory are dry.
What to do:
- Unplug the cable straight away.
- Gently tap the phone against your hand with the port facing down to remove excess liquid.
- Leave it in a dry, airy spot, ideally near a fan. Don’t use heat, a hair dryer or rice.
- Try charging again after at least 30 minutes.
Apple gives you an option to override the alert and charge in an emergency. Avoid doing this unless you really have to, as charging with liquid in the port can cause corrosion.
If the alert keeps appearing when the phone is dry, try a different cable first. If you see the alert every time you connect a particular cable or accessory, that cable or accessory may be damaged. If it appears with every cable, the port may have corrosion or debris inside and should be checked.
“This Accessory May Not Be Supported”
This usually means the cable is damaged, fake or not certified, or the port is dirty. Try an original Apple cable or one with Apple’s MFi certification, and check the port for lint.
Step 2: Try these safe fixes, in this order
Work through these before deciding it’s a hardware fault. Most charging issues are solved by step 3.
- Try a different cable and adapter. Cables fray inside long before they look damaged, especially near the connector. Test with a cable you know works.
- Try a different power point. Plug the adapter straight into the wall rather than a power strip or laptop USB port.
- Check the charging port for lint. Shine a torch into the port. If you see grey fluff, see “How to clean the port safely” below.
- Remove the case. Some thick or rugged cases stop the cable plugging in fully, and trap heat during wireless charging.
- Restart your iPhone. A software glitch can stop charging. Restarting clears most of them.
- Update iOS. Go to Settings → General → Software Update. Updates often fix charging bugs.
- Check Battery Health. Go to Settings → Battery → Battery Health. If Maximum Capacity is below 80%, a worn battery may be part of the problem.
If none of these work, the problem is most likely the charging port, the battery or, less commonly, the charging circuit on the motherboard.
Discover how we can help you achieve your goals.
How to clean your iPhone charging port safely
Lint from pockets and bags is the single most common cause of an iPhone that “suddenly” stops charging properly. Over months, fluff gets compressed into a hard layer at the back of the port, so the cable can’t click in fully.
Safe way to clean it:
- Turn off your iPhone.
- Shine a torch into the port to see what’s inside.
- Use a wooden toothpick or a soft anti-static brush. Gently scrape along the back wall and lift the lint out.
- Avoid touching the contact pins, and don’t use metal objects like paper clips or SIM tools.
- Don’t blow into the port. Moisture from your breath doesn’t help.
Signs it worked: the cable clicks in firmly again, with no wobble.
If the port still feels loose or the phone only charges at an angle after cleaning, the port itself is worn and needs replacing.
Why is my iPhone charging slowly?
Slow charging is a different problem from no charging. The usual causes:
| Cause | What’s happening | Fix |
|---|---|---|
| Low-power adapter | Old 5W adapters and laptop USB ports supply much less power | Use a 20W or higher USB-C Power Delivery adapter |
| USB-A cable or adapter | Older USB-A connections don’t support fast charging | Use a USB-C cable with a USB-C adapter |
| Using the phone while charging | Gaming, video calls and GPS use power as fast as it comes in | Leave the phone alone while charging, or use Low Power Mode |
| Heat | iOS slows charging when the phone is warm | Remove the case and charge somewhere cool |
| Wireless charging | Slower than cable charging, and slows further when hot | Use a cable when you need a quick top-up |
| Optimised Battery Charging | Deliberately slows charging after 80% | Normal behaviour; turn it off if you need a full charge quickly |
| Worn battery | An ageing battery charges and holds power less efficiently | Check Battery Health; replace the battery if below 80% |
| Damaged port | Poor contact means less power gets through | Have the port checked |
Tip for iPhone 15 and newer: these models use USB-C. Not every USB-C cable or charger supports fast charging, so a cheap cable from a market stall or online marketplace can charge noticeably slower than an Apple or certified one.
Wireless and MagSafe charging not working
If wireless charging stops working but a cable still works, the cause is rarely the phone itself. Check that:
- the case isn’t too thick, and has no metal plates or cards behind it
- the phone is centred on the charger (MagSafe snaps into place; flat pads need careful alignment)
- the charger is plugged into a suitable adapter (MagSafe chargers need a USB-C adapter of 20W or more)
- the phone isn’t hot; wireless charging generates more heat and pauses sooner
Cracked back glass can also affect wireless charging, depending on where the crack is. If your back is cracked and wireless charging has stopped, read our guide to [cracked iPhone back glass].
Lightning vs USB-C iPhones: what’s different?
| iPhone 14 and earlier (Lightning) | iPhone 15 and newer (USB-C) | ||
| Common fault | Lint packing, worn pins | Lint packing, loose port, cable compatibility | |
| Liquid alert | “Liquid Detected in Lightning Connector” or “Charging Not Available” | “Liquid Detected in USB-C Connector” | |
| Cable tip | Use Apple or MFi-certified Lightning cables | Use a USB-C cable rated for charging, ideally Apple or a reputable brand | |
| Charge limit setting | Optimised Battery Charging only | Charge limit options plus Optimised Battery Charging | |
Is it the charging port, the battery or something else?
| Sign | Most likely cause |
|---|---|
| Charges only at an angle, or the cable feels loose | Charging port |
| “Liquid Detected” with every cable, even when dry | Charging port (corrosion or debris) |
| Wireless charging works, cable charging doesn’t | Charging port |
| Neither cable nor wireless charging works | Battery or charging circuit |
| Charges, but the percentage drops fast or the phone shuts down at 20% to 30% | Battery |
| Gets very hot when plugged in, even when idle | Battery or charging circuit |
| Charges only when the phone is switched off | Possible charging circuit or software issue; needs diagnosis |
The wireless test is especially useful. If wireless charging works but a cable doesn’t, the battery is accepting charge, so the problem is almost certainly the port.
Why charging ports wear out faster in Singapore
From what we see at our branches, Singapore conditions are tough on charging ports:
- Pocket lint builds up fast with phones carried in trousers and bags all day.
- Sweat and humidity can corrode the pins over time, especially for phones carried on runs or outdoors.
- Sand from beach trips at East Coast or Sentosa gets into the port.
- Heat from car mounts and outdoor use stresses the battery and charging circuit.
- Cheap uncertified cables can wear out the port contacts or fail to charge properly.
When to get your iPhone checked
Bring your iPhone in if:
- it only charges at an angle, even after cleaning the port
- “Liquid Detected” keeps appearing when the phone is dry
- it doesn’t charge with any cable, adapter or wireless charger
- the port feels loose or the cable falls out easily
- the phone gets very hot while charging, even when idle
- it charges, but the battery drains unusually fast
A charging port replacement is one of the quicker iPhone repairs, and much cheaper than replacing the phone. At LYK Repair, most iPhone charging port repairs are completed within 30 to 60 minutes. We test the cable, adapter, battery and software first, so you only pay for the repair you actually need.
Not every charging problem is the port, though. Sometimes it’s the battery, and occasionally a fault on the motherboard. Our iPhone repair technicians run a free check first to find the real cause before recommending anything.
If your iPhone is still under warranty or AppleCare+, check with Apple first, as the repair may be covered.
How to prevent charging problems
- Use Apple or certified cables and adapters.
- Clean the port gently every few months if you carry your phone in a pocket.
- Don’t charge a wet phone; wait for any liquid alert to clear.
- Avoid charging in hot places like a car dashboard or under a pillow.
- Unplug by holding the connector, not by pulling the cable.
- Don’t game or stream heavily while charging.
- On iPhone 15 and newer, consider setting a charge limit to reduce battery wear.
For more everyday care tips, browse our iPhone Help Centre, written by the technicians who fix these problems every day.
Frequently Asked Questions
Why is my iPhone not charging when plugged in?
The most common causes are a faulty cable or adapter, lint in the charging port, heat or a software glitch. Try a different cable and adapter, check the port with a torch, and restart your iPhone. If it still won’t charge, the port or battery may need repair.
Why does my iPhone stop charging at 80%?
Usually because of Optimised Battery Charging, a charge limit set on iPhone 15 and newer, or heat. Check Settings → Battery to see which one is responsible. It’s normally not a fault.
What does “Charging On Hold” mean?
Your iPhone has paused charging because it’s too hot or too cold. Move it somewhere cooler, remove the case and wait. Charging resumes automatically once the temperature is back to normal.
How do I fix “Liquid Detected” on my iPhone?
Unplug, tap the phone gently with the port facing down, and leave it to dry in a well-ventilated spot for at least 30 minutes. Don’t use heat or rice. If the alert keeps appearing when the phone is dry, the port may have corrosion or debris and should be checked.
Why does my iPhone only charge at a certain angle?
Either lint is stopping the cable from seating fully, or the charging port is worn. Clean the port gently with a wooden toothpick. If it still only charges at an angle, the port needs replacing.
Why is my iPhone charging so slowly?
Common reasons include a low-power adapter, a USB-A cable, using the phone while charging, heat or a worn battery. A 20W or higher USB-C adapter with a good USB-C cable gives the fastest charging.
Can I use any USB-C cable with my iPhone 15 or newer?
Most USB-C cables will charge it, but cheap or uncertified cables may charge slowly or unreliably. Use Apple’s cable or one from a reputable brand.
How long does an iPhone charging port repair take?
At LYK Repair, most charging port repairs take 30 to 60 minutes. If the problem turns out to be the battery or motherboard, we’ll explain the options before starting.
Is it worth fixing an iPhone that won’t charge?
Usually, yes. Charging problems are mostly caused by the cable, port or battery, and these are some of the most affordable iPhone repairs. Replacing the phone for a charging fault rarely makes sense.
An iPhone that won’t charge isn’t always broken. Read the on-screen message, try a different cable and adapter, clean out any lint, and restart. Those steps fix most problems at home. If your iPhone still won’t charge, only charges at an angle or keeps showing a liquid alert when dry, the charging port or battery needs attention.
Still not charging? Walk in to any LYK Repair branch in Tai Seng, Jurong, Woodlands or Bugis for a free check, or WhatsApp us your model and what’s happening for a quote.
The LYK Repair team is made up of experienced mobile repair specialists providing reliable repair services in Singapore. With expertise in iPhone, Samsung, and other popular devices, the team focuses on quality workmanship and practical solutions to keep your devices working smoothly.
Still not sure what’s wrong?
Send us a photo or describe the problem on WhatsApp. A technician will tell you what it is likely to be and what it costs.
