Originally Posted by
lsquare
So basically once you use up the 8GB on the prepaid sim, you throw it out and insert a new one to your phone? I'm assuming you probably spent hundreds of dollars to stock up on your way back to Shanghai?
Most prepaid sims can be topped up online with a credit or debit card. The CMHK ones I used to use (I have a great plan with them now) could be topped up via the official website, but even if that’s not possible for a given SIM, there are myriad online services for topping up SIMs from all over the world.