Internet & Connectivity · common
Why is my foreign phone not getting data in China?
Last updated:
Quick Answer
Symptom: Your foreign SIM shows signal bars but mobile data does not work, or you got an SMS saying "no data roaming agreement."
Cause: Your home carrier has no China roaming agreement, or data roaming is disabled on your line; even with signal, your line is data-blocked at the home network.
Solution: Buy a China Unicom or China Mobile tourist eSIM / prepaid SIM at the airport, or enable a paid daily-roaming travel pass with your home carrier before landing.
What you see
Your foreign SIM shows signal bars but mobile data does not work, or you got an SMS saying "no data roaming agreement."
Why it happens
Your home carrier has no China roaming agreement, or data roaming is disabled on your line; even with signal, your line is data-blocked at the home network.
How to fix
Buy a China Unicom or China Mobile tourist eSIM / prepaid SIM at the airport, or enable a paid daily-roaming travel pass with your home carrier before landing.
Read next
These guides cover the related functionality in full.
SIM & eSIM
Tourist eSIMs from Airalo, Holafly, and Nomad give 7–30 days of China data for $5–$30 without passport registration at a Chinese store.
Portable WiFi
Rent a portable 4G/5G WiFi hotspot at the airport for ¥30–80/day, returnable at any major airport, useful for groups of 2–4 travelers.
VPN for China
Astrill, LetsVPN, and NordVPN are the most reliable VPNs in China in 2026; install before arrival because the App Store blocks downloads inside China.
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