It's ok. I'm wondering is the T-Mobile plan filtered over there too? I wasn't aware that the 3 HK SIMs would be unfiltered, but that might be an option for me in the future. I did have one a few years ago, and I was intending to use it for roaming around China, but I lost the account information and just let it expire. Now the only card I actively maintain is the Taiwan Mobile one since it's such a pain to get. Furthermore, Taiwan Mobile's card doesn't lose its balance as long as you recharge once every six months (300 TWD minimum). ^