Can low storage can backup the phone update it

Emerson2gh Said:

"Can low storage can backup the phone update it"

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Clear Space from the iPhone:

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. Learn More here: What's the Difference Between Device Storage and iCloud Storage? Apple Support. 

So, use 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