Vietnam eSIM – Affordable Data for Your Trip
Instant mobile data in Vietnam from £4.99. No roaming charges. Keep your UK number. Activates the moment you land.
Vietnam is one of Southeast Asia's most popular destinations. TripSIM provides instant eSIM activation for Vietnam with 4G coverage across the country.
Vietnam mobile networks
- Viettel — 4G
- Mobifone — 4G
- Vinaphone — 4G
How it works
- Buy your plan in GBP at our UK Stripe checkout.
- Scan the QR code we email you within minutes.
- Land in Hanoi and connect automatically.
Vietnam eSIM FAQs
Does an eSIM work in Vietnam?
Yes — TripSIM eSIMs work across Vietnam on local 4G/5G networks (Viettel, Mobifone, Vinaphone). You activate before you fly and it connects automatically when you land.
Can I keep my UK number while using a Vietnam eSIM?
Yes. Your physical UK SIM stays active for calls, texts and WhatsApp. The TripSIM eSIM runs alongside it as a data-only line.
Is hotspot / tethering included?
Yes, every TripSIM plan supports personal hotspot.
When should I install the eSIM?
Install before you leave the UK while on WiFi. Activation only starts when you connect to a local network in Vietnam.
Is TripSIM cheaper than UK carrier roaming in Vietnam?
Almost always. UK carriers typically charge £8–£12 per MB in Vietnam. Save up to 90% vs UK roaming.
Does TripSIM work in Ha Long Bay?
Yes, coverage in Ha Long Bay tourist areas is good. Signal on boat cruises may vary.