I bought iCloud storage but my phone still says I have no space

This would indicate that your storage space on the phone is full. Renting iCloud storage does not add storage space to an iPhone. If you need more space on the iPhone, you will need to delete or move existing content.

Yea, this is expected behaviour. Renting iCloud storage does not add storage space to an iPhone. If you need additional storage space, you will need to delete or move existing content from the device.

I bought icloud storage in order to update iphone. It still cannot update and does not recognize new storage.