The Greatest China 30-Day Data SIM The SIM card is valid for 30 days from the date of activation. Last activation date of the card is 30/09/2019. 3-in-1 SIM Card (Nano/Micro/Standard). Works for unlocked cell phone only. Facebook, Twitter, Google, WhatsApp, Line are available in China via using this SIM card. It provides 4G network mobile data service in Greater China (Mainland, Hong Kong, Macau & Taiwan)  30 days unlimited data usage Once your data usage in Greater China reaches 3GB Fair Usage level, the upload/download speed would be reduced and restricted (but not below 128kbps) and tethering and Peer-to-Peer services would not be available