When an iPhone 16, 16 Plus, 16 Pro, 16 Pro Max or 16e will not charge, Apple's sequence is short and worth following in order: plug into a wall outlet or another power source, restart the phone, inspect the cable and adapter for damage, clear debris from the USB-C port, and give it half an hour. If the screen stays black or shows only a battery icon, force restart with volume up, volume down, then hold the side button until the Apple logo appears, and charge for another half hour before deciding it needs service. A phone that charges but stops at 80 percent, or charges slowly, is usually a software setting or a weak charger, not a fault.
Differential
Likely causes of “Apple iPhone 16 family will not charge or charges slowly”, and how to tell them apart
- 1
A damaged, uncertified or worn cable or adapter
What separates it The phone charges only when the cable is held at an angle, or shows an accessory-not-supported message
How to confirm Swap in a known-good USB-C Power Delivery adapter and a cable in good condition; Apple says to connect directly to the charger with no adapters in between
- 2
Lint or debris in the USB-C port
What separates it The cable feels loose or does not click firmly into the port
How to confirm Look into the port with a flashlight and remove debris; Apple says to clear debris and then push the cable in firmly
- 3
The phone is holding charging above 80 percent
What separates it Charging stops at 80 percent and the phone is warm, or Optimized Battery Charging is waiting for your usual unplug time
How to confirm Apple explains that Optimized Battery Charging and, on iPhone 15 and later, a Charge Limit can stop at a set level; check Settings, Battery, Charging and raise the limit
- 4
The phone is too hot or too cold to charge
What separates it The Lock Screen says Charging On Hold and that charging will resume at normal temperature
How to confirm Move the phone and charger somewhere cooler, or bring it in from the cold, and charging resumes on its own
- 5
A weak charger, a hub or a wireless setup that limits power
What separates it Charging is slow, the Lock Screen shows a Slow Charger message, or wireless charging stalls
How to confirm Apple says a 7.5W wired charger, a multi-port adapter, a hub or a thick or metal case cut the power delivered, and a wired accessory caps wireless charging at 7.5W on these models
Before you touch a setting
Record this first — changing settings destroys the evidence
- Which of the five models you have and whether it is wired or wireless charging that fails
- Any message on the Lock Screen or under Settings, Battery: Charging On Hold, Slow Charger, Incompatible Charger or accessory not supported
- The iOS version and whether the phone gets hot while it charges
Try in this order
0 of 7 completedChange the power source first
ReversiblePlug the phone into a wall outlet, then a computer, then a separate power accessory, trying the charge again after each. Apple lists these in that order because a dead outlet or a weak USB port explains many no-charge cases.
Restart, then inspect the accessories
ReversibleRestart the phone and look at the cable and adapter for breaks or bent prongs; do not use damaged accessories. Use a wall outlet and press each connection in firmly, or try a different outlet.
Clear the port and wait half an hour
ReversibleShine a flashlight into the USB-C port at the bottom edge and remove debris, then press the cable in firmly. Leave the phone on charge for thirty minutes before you judge it.
Force restart a phone that stays black
ReversiblePress and quickly release volume up, press and quickly release volume down, then hold the side button until the Apple logo appears; this can take longer than ten seconds. Charge for another half hour and try again.
Read the charging messages
ReversibleUnder Settings, Battery, iOS 18 and later can show a Slow Charger message, which Apple says does not mean anything is wrong; iOS 26 can show an Incompatible Charger message when a charger is connected but nothing flows. Use these to tell a weak charger from a fault.
Use the right wireless charger
ReversibleFor a MagSafe Charger, plug it into a 30W or greater adapter first, then place the phone on it. Apple lists 22.5W peak for the iPhone 16 and 16 Pro and 25W for the 16 Plus and 16 Pro Max, and warns that a plugged-in wired accessory cuts wireless charging to 7.5W on all four.
Check the limit and the temperature
ReversibleIf it stops at 80 percent, check Optimized Battery Charging and the Charge Limit; if it says Charging On Hold, cool the phone down. If neither applies and it still does not charge, book service.
Model-specific
What is true of this model and not of its siblings
- Charging by model
- Apple's own 50-percent-in-30-minutes figure is a floor, not a per-model promise: GSMArena's lab tests found the standard iPhone 16 and 16 Pro comfortably ahead of it, the 16 Plus close behind, and the 16 Pro Max the clear outlier at 46 percent in the same 30 minutes despite having the largest battery of the line, taking nearly 2 hours to finish. That gap is consistent with the Pro Max's bigger cell rather than a fault, so a Pro Max charging noticeably slower than a standard 16 in the same 30 minutes is expected, not a symptom to chase.
- Wireless charging
- Apple's MagSafe table gives 25W peak for the 16 Plus and 16 Pro Max, 22.5W for the 16 and 16 Pro, and 7.5W with any wired accessory attached. The 16e supports 7.5W Qi charging only, with no magnets.
- Part numbers
- Apple's MagSafe article names the charger part number as A3502, A3503, A2580 or A3250 on the device or its cable for these phones. Phone model numbers are A3081 to A3084 and A3212 for the main models; give Apple the model number from Settings, General, About.
- Tools and supplies
- A flashlight to look into the USB-C port, a known-good USB-C Power Delivery adapter and cable, a second phone to test the cable on, and a wall outlet you have proved with a lamp. No screwdriver is involved.
- Repair cost
- Apple's US fees as summarized by iClarified for the iPhone 16 family: battery $99 on the iPhone 16 and 16 Plus, $119 on the 16 Pro and 16 Pro Max; rear camera $169 or $249; other damage $549 to $749. With AppleCare+ the battery is $0 and screen or back glass repairs are $29 each.
- Other models this page answers
- These steps also fit the iPhone 16 Pro, iPhone 16e.
Stop boundary
When this stops being a self-service repair
- !If the phone will not power on or show a battery icon after an hour on a known-good charger and a force restart, book service with Apple
- !If the port is bent, corroded or wet inside, stop plugging cables in and have Apple inspect it
- !If charging only works on one cable and every new cable behaves the same way, the port is worn and needs service, not another cable
Evidence ledger
Sources behind this answer
Where the manufacturer's article stops. Apple does not publish charge times per model, so those figures are third-party.
The charging sequence, the 80 percent stop and the unsupported-accessory message.
Chargers, Slow Charger and Incompatible Charger messages and what reduces charge speed.
Peak MagSafe power by model and the 7.5W accessory limit.
Qi charging, cases and vibration.
Charge times and the 16e's Qi-only wireless charging.
Exact questions
Common questions
Why does my iPhone 16 stop charging at 80 percent?+
Apple says Optimized Battery Charging waits to finish past 80 percent until you usually unplug, that a warm battery can hold at 80 percent until it cools, and that iPhone 15 models and later have a Charge Limit you can raise.
How fast does an iPhone 16 charge?+
Apple's own baseline is 50 percent in 30 minutes on a 20W adapter; GSMArena's lab tests found every model in the line clears that mark except the Pro Max, whose larger battery pulls it noticeably behind the rest — see the model notes below for what that means for a Pro Max that seems slow to charge.
Does the iPhone 16e charge wirelessly?+
Yes, but only at 7.5W over Qi. GSMArena notes the 16e has no alignment magnets, so it does not snap onto a MagSafe Charger and is not in Apple's MagSafe power table.
How fast is MagSafe on each model?+
Apple lists up to 25W for the iPhone 16 Plus and 16 Pro Max, and 22.5W for the iPhone 16 and 16 Pro, with a 30W or greater adapter; a connected wired accessory limits all four to 7.5W.
Can I charge with a USB hub or a car port?+
You can, but Apple says hubs and car ports can charge slower than a dedicated USB-C charger, and a multi-port adapter shares its power between the ports.
Why does wireless charging keep stopping?+
Apple says a vibrating phone can shift on the pad and interrupt charging, and that thick, metal or battery cases and objects between the phone and the charger reduce performance.
What does it cost if the battery or port is faulty?+
The iClarified summary of Apple's US fees lists a $99 battery replacement for the iPhone 16 and 16 Plus and $119 for the 16 Pro and 16 Pro Max out of warranty, free with AppleCare+; confirm the fee with Apple.