Now I have access to all you experts it seems time to clear this up. Last time I was in HK for 2 days on my way back to Australia. I handed over my phone and asked for a sim card that worked with it. The assistant gave me the sim package and I paid around AUD $20. After installing the card it didn't work and I was told no refunds as the package was opened. This was in a major shopping centre with a major telco, not at the markets. After that experience I just arranged for messages to be left for me at my hotel room or checked my email. What sim is suitable for a Next G (3G) phone ?