Solution 1: Restart your iPhone.
You can do this to fix freezing problems in general. Click and hold the wake/sleep button, and then move the slider when it shows up. You can do the same if the phone is off.
Solution 2: Reset All Settings.
You may have done this a lot before. Head to settings, then click on “General > Reset,” and choose to rest everything.
Solution 3: Update iOS.
Flashlight problems are usually software related. You may need to update the software to an upgraded version.
Look for the appropriate software version to restart your phone.
Solution 4: iPhone Restore.
This is a final solution for iOS problems. All your data will be erased when using this option. You must back your phone’s data up before doing so.
Or, your flashlights may be defective. We recommend you check with the manufacturer to fix the issues.