depends what amount of coverage you want on the phone. Full body protectors from invisible shield, best skins ever or bodyguardz are good as they are only thin films that are stuck to your phone. Or for just screen protection, get some power support film, its crystal clear and strong. Dropped my old iPhone with a power support film on it, it went 1m straight down on the edge of a fairly sharp glass block, it scratched the film but didn't let it get through to the glass on the phone.
