How do I buy more storage?

janeya144 Said:

"How do I buy more storage?: It keeps saying free storage , but I would like to buy storage. But it isn’t a option …"

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Try Clearing Space:

Internal storage space cannot be upgraded on an iPhone. Many system resources may be being used by unnecessary items. So, if you need more internal storage space, consider performing the following...

A. Clean TV and Music Libraries:

Remove all unneeded files from your TV and Music Libraries. Full-Movies take up 2-4GB typically, and a bunch of those would take up a load of storage, ideally. So, if you have any movies that are not needed, then delete them.

Also..

B. Clear Temporary Internet Files:

Clear your Temporary Internet Files(Cookies & Cache) of Safari:

• Cookies perform remembrance of certain site-entered data.
• Cache keeps a snapshot of the last time you visited a site.
• Go Here: Clear the History and Cookies from Safari on your iPhone, iPad, or iPod Touch - Apple Support

C. Clear "Other":

Clear the storages named "Other". It basically contains unnecessary files such as caches that are used for system ease of use - all of which gather over time: How to Clear "Other" in your iPhone's Storage - Use Backup - User Tips

You would need to upgrade your iCloud storage. This article can help: Upgrade your iCloud storage plan.