iCloud Storage is one of the most misused and misunderstood features of the iPhone. I love Apple products, but theres no other way to put this: In most cases, buying iCloud Storage is unnecessary and you should never pay for it.
What happens if I buy iCloud storage?
When you buy iCloud+, your upgrade is billed to the Apple ID that you use with iCloud. See or change your Apple ID payment information. If you reach or exceed your iCloud storage limit, learn how to make space available. You get 1GB of free storage with web-only access to iCloud.
Can you buy iCloud storage without paying monthly?
iCloud Storage is the total amount of storage space available on iCloud. Its what you pay for. Everybody gets 5GB (gigabytes) for free. You can upgrade your storage to 50GB, 200GB, or 1TB (1 terabyte is 1000 gigabytes), and the monthly fees arent too bad – but its not necessary.