This article helps troubleshoot your iPhone SE slowing, freezing, or turning off unexpectedly
You may have performance issues if your iPhone SE:
Try each of these steps to see if it helps improve your iPhone's performance.
Perform a soft reset.
A soft reset restarts your iPhone and does not erase any of your content or data.
Determine if your iPhone has low memory.
Close background applications.
Some apps continue to run in the background after you exit them. We recommend that you close background applications when you're not using them.
Verify that your iPhone SE is running the most recent software.
There may be a software update that improves battery life on your iPhone. Check for software updates.
If you're still having issues, please select your provider to contact Customer Care: