Why won't eSIM install in Vietnam if my phone supports eSIM?

From messages by 3 participants in 1 source · Last activity: 28 days ago

TL;DR

If you get a device incompatibility error when installing an eSIM in Vietnam, your phone likely doesn't actually support eSIM — Chinese market versions of phones often have dual physical SIM slots instead of eSIM support.

What the community said

A travel eSIM may provide mobile data only, with no phone number or voice calling. Grab can be used without registering a phone number.

29 days ago Grab

If the phone has no physical SIM slot, an eSIM can be bought through Trip.com or at a mobile operator’s office after arriving in Vietnam.

28 days ago Trip.com or operator offices

A device incompatibility error when installing an eSIM almost always means the phone genuinely doesn't support eSIM, even if you think it does. Chinese market versions of iPhones and Android phones are commonly released with two physical SIM slots instead of eSIM capability. Check your exact model number online to confirm.

Chinese market iPhone — dual physical SIM, no eSIM

If your device doesn't support eSIM, installation simply won't work. Look up your specific phone model online to verify eSIM compatibility — support varies by regional variant and firmware version.