Suitable for the following groups: Hong Kong residents who frequently travel north on weekends or for short business trips: If you often visit cities in the Greater Bay Area like Shenzhen and Guangzhou on weekends, or travel for business a few days each month, 18GB of data per year is more than enough. Business or leisure travelers who need to use Google/IG frequently: Using this card for roaming in mainland China allows direct access to overseas websites and apps like WhatsApp, Instagram, and Facebook, eliminating the hassle of using a VPN. For those using it as a backup, number retention, or secondary SIM card: This group usually already has a primary number. The card's low cost of around HK$150 per year makes it ideal for use as a secondary SIM card, specifically for navigation, scanning QR codes, and researching information when returning to mainland China. "Digital nomads" or commuters between Hong Kong and mainland China: For users who don't rely heavily on watching videos and mainly use WeChat, email, and map navigation, 18GB (approximately 1.5GB per month on average) is sufficient to support basic needs throughout the year.

18GB data allowance for use in Mainland China and Macau No registration required; plug-and-play Supports apps such as WhatsApp, Telegram, TikTok, and Instagram Supports data sharing (tethering) with other devices Valid from the day after activation until 23:59 (Hong Kong time) on the 365th day. Send a text message with the content "1" to 12580 to check data usage Data service will automatically terminate once the accumulated data usage reaches 15GB