How to make memory on sims 3 For Iphone?

This what it looks like it won't let me play!How to make memory on sims 3 For Iphone - 1

You don't have enough GB (GB are your devices memory and you only have so much memory before you run out)
You run out of GB bye using games photos (example every game takes up let's say 3.2 GB those GB are now gone and to get them back you have to delete it or a photo or anything you have on that device that uses GB and so you take off as many things as you need to until you have enough GB for that game)

You can go to a store or company and get more GB but it cost money to add GB so I suggest just deleting a game that you don't use