How to Stop iPhone From Turning Off, Sleeping, or Locking Automatically

Basic Fixes

• Restart Device: You can try restarting your device to see if it fixes the problem.
• Check battery health: If the battery health is below 80% and your iPhone keeps turning off, it’s time to replace the battery.
• Check if iPhone is overheating: If your iPhone gets hot and exceeds the usable temperature, the device may turn off to protect the components.
• Use original charging accessories: If you’re not using an MFi-certified (Made for iPhone) charging accessory, any issues your iPhone faces when charging can cause it to turn off.
• Update iPhone: Ensure to update the software on your iPhone for a bug-free experience.

That said, if the problem persists, try the below methods to fix the problem.

Fix 1: Disable Auto Lock

If your iPhone keeps turning the screen off, check if you’ve enabled auto-lock after a short duration. You can increase the duration or disable auto-lock.

Open Settings, go to Display and Brightness, and select Auto Lock. Either increase the duration after which your iPhone gets locked or use Never to disable auto lock.

Fix 2: Check the Case

If there’s something between your case and the side button on your iPhone – it may press the button and lock your phone. Moreover, check if you’re using a case that makes it easy to press the side button and lock your iPhone accidentally.

Fix 3: Check True Tone

If you cannot see your screen as you step outside in the bright sun, your iPhone isn’t locked but the display isn’t bright enough. You will have to enable True Tone so that the brightness of your screen is automatically increased.

Open the Settings app, go to Display and Brightness, and turn on True Tone.

However, if you have enabled True Tone and yet the brightness doesn’t increase – there’s a problem with the ambient light sensor on your device. You can keep it disabled and manually increase the brightness before you step outside.

If nothing works, reset your iPhone to the default settings.