Not on iPhone 4. I tested it on my friend's phone and it went unusable and you're also risking geting the phone locked. I would wait the last version, more poli

Not on iPhone 4. I tested it on my friend's phone and it went unusable and you're also risking geting the phone locked. I would wait the last version, more polished in all aspects, specially on the speed one, because on iPhone 4 is WAY slower.