Read this support article for how to check the storage on your iPhone, iPad, and iPod touch
How to check the storage on your iPhone and iPad - Apple Support
- General article on seeing what is taking up storage on an Apple mobile device and tips on how to clear some storage space.
Note there's different kinds of "storage". Click on this link to "Learn the difference between your device and iCloud storage, ways to manage your space, and where to buy more if you run out." --> What's the difference between device storage and iCloud storage? - Apple Support
Take-away:
1. Storage on a device itself is fixed and cannot be upgraded. You have to change your present device for one with more capacity.
2. iCloud storage is on Apple's main computers. It is not a like a normal storage hard drive but by using optimization settings on your device it can help free up device storage. Lesser used items and larger file versions can be stored in ICloud and you can get access while connected to the Internet. It does not turn a 64 GB storage device into a 64 (or whatever) + 50/200/2TB GB device but if you have a lot of things that aren't being used much, or you don't mind only having lesser quality photos on your device it can free up extra space so you can make the best of the GB you do have on the device itself.
Click on the link to learn how to optimize the storage on a device --> "How to check the storage on your iPhone, iPad, and iPod touch" - How to check the storage on your iPhone and iPad - Apple Support
- "If your device is low on storage, it automatically frees up space while installing an app, updating iOS or iPadOS, downloading music, recording videos, and more.
