I will be visiting Hong Kong for a couple of months, and need help finding answers for a few questions. 1. Which cellular carrier is most compatible with iphone features, is it '3'? or not much differences? 2. Do you know of any carrier that offer prepaid service with data for iphone? 3. If not, do you think I can activate my own 3G iphone (unlocked) on a monthly plan without any contract, then terminate contract in 1-2 months? Thanks in advance.