I wish to get Unbranded/Factory Unlocked Motorola Atrix 4G from Kuala Lumpur, Malaysia through my sister. All she is getting is AT&T unlocked sets. I have few queries regarding the handsets, 1) If I root the AT&T handset and update with custom ROM, will the set be locked again. 2) What all features I shall be missing I if AT&T unlocked set 3) The dealer is giving 1 yr warranty which is of no use to me as my sister would be leaving Malaysia permanently. Kindly help with any store in or near Kuala Lumpur which deals in factory unlocked sets. Are AT&T unlocked sets worth buying?