Can’t upgrade my storage

You cannot increase the storage size on your phone, it is a fixed size.

If you're trying to increase your iCloud space, look here -

Upgrade your iCloud storage plan -

Upgrade to iCloud+ - Apple Support

taylah-jane Said:

"Can’t upgrade my storage: I’m trying to upgrade my storage and it’s not allowing me to do so"

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Troubleshooting iPhone Storage:

Try Removing Data from the iPhone itself...

Internal storage cannot be upgraded. It is what it is. So, the maximum internal storage capacity never increases, even if you upgraded your iCloud plan.

So, what to do:

Find out on my two user tips:

• How to Clear Space from your Mobile Device, and What to Clear: - User Tip
• How to Clear "Other" in your iPhone's Storage - Use Backup - User Tip

Do you mean iCloud storage? That is upgradable, but if you are currently on the 2TB plan (which I believe is the max), no.