In iPhone, carriers restrict their sim to the device & no other sim is allowed into the phone but jailbreaking solves that problem. Does the same happen with android phones? Is it restricted to one sim & needs to be unlocked? Is this unlocking process the same as rooting? How can i root my Android 2.2? Is it safe? Can I ever unroot it? Because there's no resetting for an android like an iphone. What advantages do a rooted phone have over an nonrooted phone?