How to Save Photos in JPEG instead of HEIC on iPhone in iOS

Step #1. Launch the Settings app on your iOS device.

Launch Settings app on iPhone

Step #2. Now, tap on Camera. Tap on Camera in iOS 12 Settings

Step #3. Next, tap on Formats. Tap on Formats in iPhone Camera Settings

Step #4. Next up, select Most Compatible. Select Most Compatible to Take JPEG Images in iOS 11 or 12