Will it make some difference if i buy One2free or 1010 or csl sim card on my arrival in hongkong. Is the signal reception(signal range at different location throughout city) same for any of these networks (as i have heard all are sister brands)?? I want to use the sim card just for internet usage(for using all the apps) on my iphone. If everything is same fir these networks then why they operate under different brand names? I am confused.