Mars Signal

Mars Signal — Global mobile data, made simple for travelers from China.

Whether you're traveling abroad, studying overseas, working remotely, or on a quick business trip, Mars Signal gets you online the moment you land. No SIM swap, no VPN headache, no shocking roaming bills.

Three Formats, One App
- eSIM: scan QR, get data in 5 minutes. 200+ countries and regions.
- Physical SIM: classic format, mainland China express delivery.
- SeSIM Card: a single physical card holding up to 15 eSIMs — perfect for multi-country trips.

Truly Works From China
- Compatible with China Mobile, China Unicom and China Telecom signaling
- Product pages clearly show coverage country, carrier, 4G/5G support and local speed
- Top up instantly when your data runs low — no forced subscription

Pay The Way You Already Pay
- WeChat Pay, Alipay, mainland credit cards, Apple Pay
- Manage balance, gift cards, coupons and referral rewards in one tab
- Ticket system and email support — replies within 24 hours

Privacy and Security
- HTTPS/TLS end-to-end encryption
- Sensitive fields (phone, ICCID) masked in the UI
- Self-service account deletion with 30-day cooling-off period

Made For
- Business travelers visiting clients abroad
- Students studying or interning overseas
- Digital nomads and freelancers
- Cross-border e-commerce teams and remote workers
- Independent travelers and backpackers

Mars Signal — connecting you to the world, signal by signal.