guys need help. i am currently on 3gs on t-mo and this time instead of going thru jailbreak and unlock route, i m just thinking of getting unlocked version. will i be able to use 4s on t-mobile, obviously on edge and not 3g? also what about micro-sim, will i have to cut my existing sim and use it with 4s? and if i pre-order now, when will get the unlocked phone, sometime in november? thanks in advance.