Joined: Jun 2011
Posts: 736
Short of buying a new phone with more gigs, if I am correct you can buy more storage through your iCloud. Go into your settings, iCloud, storage, buy more storage.
Looks like you pay monthly and it's as follows:
50gb = $ 1.29
200gb = $ 3.99
1TB = $ 12.99
2TB = $ 25.99