An iPhone 15, 15 Plus, 15 Pro or 15 Pro Max that runs warm is usually doing something Apple lists as normal: setting up, restoring, installing a major update, wireless charging, gaming, using the camera or streaming high-quality video. The Pro models, on the A17 Pro chip, are the ones people most often notice getting warm under a game or a long video recording. It counts as a fault only when the phone shows a temperature warning, dims, stops charging or loses signal while nothing demanding is running. The cure is to stop the task, take off a thick case and let the phone cool in the shade.
Differential
Likely causes of “Apple iPhone 15 family gets hot or shows a temperature warning”, and how to tell them apart
- 1
Normal warmth after setup, a restore or an iOS update
What separates it The phone stays warm for a few days after you move to it, restore a backup or install a major update
How to confirm Apple lists all three as normal; check Settings, Battery for an Ongoing iOS Update or Ongoing Device Setup Insight
- 2
A game, the camera or high-quality streaming
What separates it It heats and the frame rate drops only during gaming, filming or streaming
How to confirm Apple says graphics-intensive apps, camera apps and streaming raise temperature; close the app and the phone should cool
- 3
Wireless or MagSafe charging while in use
What separates it The phone is hottest on the puck, and more so while you use it
How to confirm Apple notes that wireless charging warms the phone and that a warm battery may pause at 80 percent; lift it off the pad and use it for ten minutes
- 4
Heat from the environment
What separates it It heats quickly in sun, on a dash or in a car and navigation shows a temperature alert
How to confirm Apple's range is 0 to 35 degrees Celsius for use; keep it out of the sun and out of parked cars
- 5
A runaway app in the background
What separates it The phone is warm at idle and one app or system item leads the Battery list
How to confirm Check App and System Activity in Battery, restart, and update or remove the app
Before you touch a setting
Record this first — changing settings destroys the evidence
- Which of the four models you have and whether it is a 15 or 15 Plus on the A16 Bionic, or a Pro on the A17 Pro
- What the phone was doing when it got hot: charging, a game, the camera, navigation or nothing
- Whether a temperature warning, Charging On Hold or a dim screen appeared, and how long it lasted
- The ambient temperature, the case in use and whether it heats on a different charger
Try in this order
0 of 6 completedStop the task and remove the heat source
ReversibleQuit the game, camera or video app, unplug the charger, remove a thick case and get the phone out of the sun. Apple says a phone warmed by an activity cools once the activity ends.
Check for background work
ReversibleOpen Settings, Battery and look for the Insights message Ongoing iOS Update or Ongoing Device Setup. Apple says the tasks run for a while after an update or setup and add heat, and battery life returns to normal when they finish.
Find the app at the top
ReversibleIn App and System Activity, look for one entry far above the others, especially one labeled Background Activity. Restart, update that app and check again.
Separate charging heat from use heat
ReversibleUse the phone unplugged for ten minutes, then charge it and leave it alone. Apple lists up to 15W on a MagSafe Charger for iPhone 15 models and warns that a warm battery can hold at 80 percent.
Watch for the protections
ReversibleApple lists charging slowing or stopping, the display dimming or going black, signal weakening, camera features turning off and frame rates falling as signs the phone is protecting itself. These mean it is too hot, not broken.
Stay inside the range
ReversibleApple's range is 0 to 35 degrees Celsius for use and minus 20 to 45 for storage. Apple warns that very hot conditions can permanently shorten battery life.
Model-specific
What is true of this model and not of its siblings
- Chips by model
- GSMArena lists the A16 Bionic (4 nm) for the iPhone 15 and 15 Plus and the A17 Pro (3 nm) for the 15 Pro and 15 Pro Max, with 6 GB of RAM on the standard pair and 8 GB on the Pro pair.
- Displays
- The 15 and 15 Plus are 60 Hz OLED panels with up to 2,000 nits peak; the 15 Pro and 15 Pro Max are LTPO panels up to 120 Hz with the same peak. Sizes are 6.1 inches (15, 15 Pro) and 6.7 inches (15 Plus, 15 Pro Max).
- Part numbers
- Apple's MagSafe article names the charger part number A2140 for iPhone 15 and earlier. Phone model numbers are A2846 (15), A2847 (15 Plus), A2848 (15 Pro) and A2849 (15 Pro Max).
- Repair cost
- If heat comes from a fault, MacRumors reports Apple's US battery fee at $99 for all four iPhone 15 models and back glass at $169 or $199 on the Pro models; AppleCare+ covers batteries under 80 percent capacity.
- Other models this page answers
- These steps also fit the iPhone 15 Plus, iPhone 15 Pro, iPhone 15 Pro Max.
Stop boundary
When this stops being a self-service repair
- !A bulging back or screen, or a hot or scorched smell, means stop charging and take it to Apple that day
Evidence ledger
Sources behind this answer
Where the manufacturer's article stops. The figures for capacity, charge times and display come from GSMArena's lab tests and spec sheets, and every one is a third-party measurement that Apple does not publish.
Operating and storage temperatures and the protections the phone applies.
Ongoing update and setup tasks.
MagSafe power for iPhone 15 models.
The A17 Pro chip and 120 Hz display.
Exact questions
Common questions
Is a warm iPhone 15 normal?+
Yes in the situations Apple lists: first setup, restoring from a backup, a major update, wireless charging, graphics-intensive apps, camera use and high-quality streaming.
Do the Pro models get hotter?+
Apple does not compare models. The 15 Pro and 15 Pro Max use the A17 Pro and a 120 Hz display, and the 15 and 15 Plus use the A16 Bionic at 60 Hz, so heavy games and bright screens load them differently.