When it comes to converting file extensions on your iPhone, don't worry about downloading a third-party app when you can make the changes yourself.

The iPhone 16 and 16 Pro can shoot images and videos in several different file formats. iPhones default to HEIC and MP4, but can use many more depending on what kind of phone you have. Apple's ...

iOS 11 uses new video and photo formats that will help save storage space. And Apple has figured out how to make sure you can use those files on non-iOS 11 devices.