Convert Indian SIM to eSIM
Personally used
Convert your primary single SIM phone to eSIM before travelling
Leaves physical SIM slot free to install local Vietnam SIM card upon arrival
SMS activation can take up to 24 hours (activate eSIM 1 day before departure for bank OTPs)
Why get an eSIM for travel?
Indian bank OTPs & UPI balance checks require active primary mobile number
Removing primary physical SIM card on single SIM phones creates hassle abroad
eSIM allows instant dual-SIM convenience to receive bank OTPs anytime