Q: how do I move existing photos on my iphone 4 to icloud.  I can't take any more pictures because it says there is not enough available space to take a photo.

Hi Joy,

The iCloud storage you purchased is going to be more for items like a backing up your iPhone; it does not give more storage physically on your iPhone. What you will want to do is update your iPhone by using iTunes if you do not have enough space. It would also be a good idea to import the photos to your computer to make sure that you have a backup before updating your iPhone. Check out the articles below for more information. 

Resolve issues with an over-the-air iOS update

https://support.apple.com/en-us/HT201435

Manage your iCloud storage

https://support.apple.com/en-us/HT204247

Import photos and videos from your iPhone, iPad, or iPod touch to your Mac or Windows PC

https://support.apple.com/en-us/HT201302

Take it easy,

-Norm G.