Does Signal work in Vietnam?
Yes — works normally
Yes. Signal works normally in Vietnam over mobile data — there is no China-style block. Just get online with a Vietnam eSIM and open the app as usual.
Detail: Works over data for encrypted chat and calls.
Using Signal on a Vietnam eSIM
Install a Vietnam eSIM before you fly, set it as your data line on arrival, and open Signal as normal. 5GB/day easily covers messaging, maps and video calls.
Get online in Vietnam
5GB/day from $8, direct from an authorized Viettel & Vinaphone dealer. Need OTP for Grab, Zalo or banking? The Vinaphone plan gives you a real +84 number.
Checked for Vietnam, 2026. Apps work over mobile data unless noted; availability can change.