Your iPhone protects its battery by limiting charging in hot or cold conditions. Charging your iPhone in very hot or cold environments can temporarily affect performance, and when your iPhone becomes too warm or too cold, iOS may automatically slow down or pause charging. This helps preserve your battery’s long-term health and ensures safe operation.
Charging resumes on its own when the battery is back in a safe temperature range. These protections work automatically and can’t be turned off, and charging works best between 32° and 95° F (0° and 35° C).
A message like “Charging On Hold. Charging will resume when iPhone returns to normal temperature.” might appear on the Lock Screen.
What to expect
- If your iPhone gets too warm, charging may slow or stop until the temperature lowers.
- In very cold environments, charging may be slower or temporarily disabled until your device warms up.
- Charging resumes automatically when the battery returns to a safe temperature range.
These protections apply any time you’re using a cable, MagSafe Charger, or other wireless chargers.
Tips to maintain charging performance in extreme temperatures
To help your iPhone charge efficiently, follow these best practices:
- Charge your iPhone in environments between 32° and 95° F (0° and 35° C).
- Avoid placing your iPhone in direct sunlight or leaving it in hot spaces (like a car on a sunny day).
- If you’re in a cold climate, try charging indoors or warming your iPhone gradually before plugging it in.
- Remove your case if your iPhone tends to heat up while charging.
Note: These temperature-based protections work automatically and can’t be turned off. They are available on iPhone using iOS 16 or later.
