iCloud

I purchased 100GB with iCloud but it’s not backing up?

Check -> Go to -> Settings -> your name -> iCloud -> if you see 50 GB (or 200 GB or 2 TB) then you have an iCloud subscription.

If you have an iCloud subscription, you will receive a monthly bill from Apple, check your email box.

You pay monthly for iCloud storage.

Read again -> Related Article -> How to back up your iPhone, iPad, and iPod touch with iCloud