Has anyone jailbroken iphone5 before?

Hi. I wonder if anyone has - no problems after jailbreaking such as crashing, slowness, lower battery life etc.
My iphone is on 6.0.2 version, still under one year warrenty. I want to find the best app to jailbreak without removing my contacts, photos, docs, music files etc.

My boyfriend and I smashed a few of them open before, if that counts. LOL

Jailbreak experts jailbreaked iPhone 5 but they will put on their website when Apple release iOS 6.2. I have jailbroken my iPhones before and I never had a problem. Also your info on your phone won't be deleted when you jailbrake it, hope o could helped.