Stay connected across China & Hong Kong & Macao with flexible plans, fast setup and support from real people.
On unlimited plans you get high-speed 5G/LTE and 1080p HD streaming even under fair use, with the policy stated up front.
Reach real people on WhatsApp and email, before and during your trip. No bots, no scripts.
No passport, no registration, no SIM swap. Privacy-first activation in minutes.
Receive your eSIM by email and in the ByteSIM App. Scan, install and connect on arrival.
Choose your China & Hong Kong & Macao eSIM, install it before you fly, connect on arrival and manage everything in the ByteSIM App - usually ready in about 3 minutes.
Check your device, then select the destination, data and duration for your trip.
Check compatible devicesUse the QR code or ByteSIM App on stable Wi-Fi. Installing early usually does not start your plan.
Most plans activate on arrival. Some start on a selected date or in the app.
Check usage, add data and contact ByteSIM 24/7 support.
See how ByteSIM compares with roaming, local SIM cards and typical travel eSIMs.
| Feature | ByteSIM Built for flexible travel | Roaming | Local SIM | Typical eSIM |
|---|---|---|---|---|
| Unlimited Data | Smooth 1080p HD* | No | No | FUP 256kbps–1Mbps |
| Multiple Networks Better coverage where available | Most plans | Varies | No | Varies |
| Free Switch & Swap Network and device flexibility | Most plans | No | No | No |
| No Passport Upload | Yes | N/ANot applicable | Often required | Varies |
| Instant Delivery Email and app access | Yes | N/A | No; store or kiosk required | Usually yes |
| 24/7 Human Support Real people, not scripts | Yes | No | No | Varies |
| 180-Day Money-Back Guarantee Refund policy applies | Yes | No | No | No |
General comparison only. *All ByteSIM plans include unlimited data. Truly unlimited plans support smooth 1080p HD streaming under fair use. Multiple networks, Switch & Swap, hotspot, keeping your primary number and refunds vary by plan, destination and policy.
China Unicom
CSL
CTM
