So your iPhone 15 won't charge. You plug it in and nothing happens, or maybe it just sits stubbornly at 80%. This is incredibly common, especially since the iPhone 15 was the first model to switch from Lightning to USB-C. The good news is you can almost always fix it yourself in a few minutes.
Whether you're dealing with a dead battery, a confusing software setting, or a port full of pocket lint, let's run through the solutions. We'll start with the quickest fixes that solve most problems.
Force Restart Your iPhone 15
This should always be your first move. A simple force restart clears out temporary software glitches that can interfere with the charging system. It takes about 20 seconds and often works when nothing else seems to.
For the iPhone 15, the process is quick. Press and quickly release the Volume Up button, then press and quickly release the Volume Down button. Finally, press and hold the Side button until you see the Apple logo appear on the screen.
Once it boots back up, plug in your charger again. You should see the charging indicator if this was just a minor software hiccup.
Clean the USB-C Charging Port Thoroughly
This is the single most common fix for the iPhone 15. That new USB-C port is a magnet for lint, dust, and debris from your pockets or bag. Over time, it packs in so tightly that your cable can't make a proper connection.
First, power off your iPhone. Grab a bright light and look directly into the USB-C port. If you see a dark mat of lint packed in the bottom, that's your culprit.
Use a wooden toothpick or a plastic flosser pick to gently scrape the debris out. Avoid metal tools, as they can scratch the delicate gold contacts inside. You can also try a quick blast of compressed air, holding the can upright to avoid moisture.
Check Your Cable and Power Source
Since the iPhone 15 uses USB-C, a whole world of cables is now compatible. But not all cables are created equal. Start by trying a different USB-C cable, preferably one that's Apple-certified or MFi-approved.
Also, test a different wall adapter and a different power outlet. Plug directly into a wall socket instead of a power strip. If you have a thick case, especially a MagSafe case with a magnet ring, try removing it as it can sometimes interfere with a proper cable connection.
If your phone charges with a different setup, you've found the problem. I'd recommend replacing that old cable or adapter.
Verify the 80% Charge Limit Setting
This one confuses a huge number of iPhone 15 owners. Apple introduced a new battery health feature that lets you cap your maximum charge at 80%. If your phone seems to stop charging at 80%, this setting is almost certainly why.
Go to Settings > Battery > Charging. Look for the "Charge Limit" option. If it's enabled and set to 80%, your phone is working exactly as intended to prolong battery lifespan.
You can tap to disable it for a full 100% charge. Remember, keeping it on is better for your battery's long-term health, but it's perfectly fine to turn it off if you need a full battery for a long day.
Wait for a Completely Drained Battery
If your iPhone 15's battery is fully depleted, it won't show any sign of life immediately when you plug it in. This is normal behavior. Connect it to a wall charger using a good cable and adapter, then leave it alone for at least 30 minutes.
Don't use a low-power source like a computer USB port for this. After about half an hour, you should see a red battery icon or the charging indicator on the screen. If you still see nothing, try a force restart while it remains plugged in.
Test with MagSafe or Qi2 Wireless Charging
Your iPhone 15 supports both MagSafe and the newer Qi2 standard for wireless charging. If wired charging isn't working, try placing it on a wireless charger. This helps diagnose whether the problem is the USB-C port or something else.
For the best results with MagSafe, make sure the charger's magnets snap into alignment. Use at least a 20W USB-C power adapter to get the full 15W charging speed. Also, be aware that wireless charging generates more heat.
If your phone gets too warm, it will slow down or pause charging to protect the battery. If wireless charging works but the USB-C port doesn't, the port itself likely needs professional attention.
Update to the Latest Version of iOS
Apple frequently releases iOS updates that fix bugs, including ones related to power management and charging. If you're running an older version of iOS, updating could resolve your issue.
Go to Settings > General > Software Update. If an update is available, download and install it. Make sure your phone has enough battery or is plugged in during the process.
If your iPhone won't turn on to check for an update, you can update it via a computer. Connect it to a Mac or PC with a USB-C cable and use Finder or iTunes to check for and install any available updates.
Charge with the Phone Powered Off
Sometimes a background app or process can interfere with the charging circuit. To rule this out, turn your iPhone 15 completely off. Press and hold the Side and Volume Up buttons, then slide to power down.
Once it's off, plug in your charger. If it begins charging normally, you know the issue is software-related. This is also a great way to get a slightly faster charge, as no system resources are being used.
Restore Your iPhone Using a Computer
If every other step has failed, a full restore can eliminate deep-seated software corruption. This will erase all data on your phone, so ensure you have a recent backup in iCloud or on your computer.
Connect your iPhone 15 to a computer and open Finder (on Mac) or iTunes (on PC). Put the phone into Recovery Mode by pressing and holding the Side button and Volume Down button together until the recovery screen appears.
On your computer, choose the "Restore" option. This will install a clean version of iOS. After it finishes, set up your phone and test the charging again. If it still doesn't work, the problem is almost certainly hardware-related.
