China & Hong Kong Dual-number Prepaid SIM (Cross Broader King Extra) The China & Hong Kong Dual-number Prepaid SIM (Cross Border King Extra) is the best Voice & Data SIM card available in Mainland China & Hong Kong. You get local phone numbers in both China & Hong Kong. Connect to 3G/4G mobile Internet easily with full tethering support! No photo ID required. You enjoy local calls at a reasonable rate (just HK$0.39 per min. to or from China & Hong Kong). Incoming calls are free in China & Hong Kong. Data packages are available at only HK$48 for 7 days (or up to 300MB) and HK$68 for 30 days (or up to 500MB). An initial value of HK$80 is included with this SIM, and you can always top up online. Use your SIM to browse Google, Facebook and Twitter, all available in Mainland China! This SIM provides data roaming services via Hong Kong and is free from the "great firewall of China," so browse all you want! This is a 3-in-1 (Nano, Micro and Normal) SIM card, so it can adapt to any SIM size without a SIM card cutter. The seller's original "Setup Guide" (English version) is available. (Note)You need a SIM-free device to use this SIM. (Frequencies and coverage) [China](2G/GSM)900,1800Mhz (3G)2100Mhz (4G/LTE)1800Mhz [Hong Kong](2G/GSM)900,1800Mhz (3G)2100Mhz [Macau](2G/GSM)900,1800Mhz (3G)2100Mhz [Taiwan](2G/GSM)900,1800Mhz (3G)2100Mhz (4G/LTE)1800Mhz