Now that you've backed up your iPhone, you can erase it. Go to Settings > General > Transfer or Reset iPhone. Select "Erase ...

Over the years, Apple has increased the amount of internal storage space on an iPhone. Despite that, cleaning up your iPhone storage is something you should do from time to time. While doing that, you ...

If you are struggling with not enough storage and trying to make more space on your Mac, Apple helpfully outlines ways to save space and shows some mysteriously named elements taking up storage space.