so we know that Tmobile will offer the iphone officially. i know that if i put in my sim card into a "tmobile iphone" i'll get the data upsell message because the imei# will be in their system. but what about unlocked phones "pre-tmobile" iphone.... you guys think i'll get the upsell message??? asking because all phones will get an update soon for LTE on their pre-tmobile-iphones.... any one with some knowledge ???? definitely want to keep using tzones.