iphone
My iphone memory is full even I purchased 50gb additional storage’s and having 25gb cloud space my iPhone storage is full even deleted videos and photos still memory full
buying iCloud storage does not expand the storage capacity of your iPhone. iPhone storage capacity cannot be increased
What's the difference between device storage and iCloud storage? - Apple Support
here is how to check what's taking up space on your iPhone
How to check the storage on your iPhone, iPad, and iPod touch - Apple Support