Suitable for: 1. Frequent visitors to Hong Kong and Macau and infrequent cross-border commuters: Data is valid for a full year. Suitable for: Individuals residing in Hong Kong or Macau who need to travel between mainland China (e.g., Shenzhen, Guangzhou) and Macau several times a year for family visits, tourism, or business. They don't need to buy separate short-trip cards for each trip; one annual card can handle their scattered cross-border internet needs throughout the year. 2. Lightly internet-dependent "budget-conscious travelers": 15GB of data averages to approximately 1.25GB per month. Suitable for: Light users who primarily use their phones for map navigation, daily text/voice communication on WeChat, presenting travel/payment codes, and browsing the web when traveling to mainland China or Macau. As long as they don't download large files or watch short videos while roaming, 15GB is sufficient for a year's worth of occasional trips. 3. Perfectly matched for business travelers and social media influencers needing direct access to overseas social media apps: As this roaming card is issued by China Unicom Hong Kong, its network node is located in Hong Kong (Hong Kong IP). Suitable for: Individuals traveling or working in mainland China who need direct access to overseas apps like WhatsApp, Facebook, Instagram, Google Maps, or Gmail for work communication or social media check-ins without needing a VPN. It perfectly bypasses the mainland's internet firewall. 4. Perfectly matched for travelers who highly value privacy and reject cumbersome real-name registration: Cards with mainland phone numbers require strict binding to a Mainland Travel Permit or ID card for facial recognition. This is a numberless, pure data card that is plug-and-play in mainland China and Macau without real-name registration. Suitable for: Privacy-conscious individuals who only travel abroad temporarily, do not want to input sensitive personal information into the systems of telecommunications companies in both regions, and seek a fast, "buy, plug, and play" experience. 5. Precisely matched for users with dual-SIM dual-standby phones who require a "backup network/car navigation": Supports mobile hotspot sharing, and data usage stops automatically when full, with no hidden charges. Suitable for: Inserting it into the SIM 2 slot of a dual-SIM phone, or placing it in a portable WiFi device or car infotainment screen, specifically for long-term navigation and streaming music use while driving in mainland China. It serves as a backup network after the primary SIM card (such as a Hong Kong local monthly plan) runs out of Greater Bay Area data.

Hong Kong Unicom Greater China Data SIM Card 15GB/365 Days (No Number Included, Unlimited Speed, Terminates After Usage) This card is valid from the day after activation until 23:59 Hong Kong time on the 365th day (15 days in total). Supported Applications: WhatsApp, Telegram, TikTok, Instagram, etc. Activation Method: Automatic activation upon insertion, no complicated operation required. Check Data Usage: Dial 77850# or 11855# or check via your phone's settings menu.