Ask Mac Questions and Get Answers from Experts ASAP
I am Vinod. I will try my best to help you resolve this issue.
On your iphone, let's go to settings > general > storage and icloud usage.
There, under "Storage" section, what is the available space listed?
Also, click on "Manage Storage". There you will find how much storage each app is using up. Let me know what is taking the most.