I need to jailbreak my iphone 4s, to use tetherme to edit my apn settings to get mms working. I'm fine with this, did it on my previous iphone. BUT - I've come to really just be fine with and enjoy the stock iphone experience. When I was jb, I noticed dramatic decrease in performance and battery life. I realize it may have been faulty tweaks or who knows what, and I'm not bashing jailbreaking at all, and will probably do it again when I get bored, but for me, I prefer stock at the moment. So anyway my question: can I jailbreak the phone, edit the apns, then remove the jailbreak while keeping the edited apn settings? If so, how would I go about this? I guess I could just keep it jailbroken once I've done it, but like I said, I'm planning to go stock anyway, so why be jailbroken if I don't have to be? Thanks for any tips.