Internet in Vietnam: roaming, eSIM, local SIM and VPN explained
From navigating in Hanoi and booking a Grab taxi to reserving night buses and showing e-tickets, a reliable internet connection is almost essential while traveling Vietnam.
Roaming with your own plan
Vietnam isn't covered by EU roaming rules. Using a Dutch or Belgian plan means roaming charges can add up fast, check with your provider before you leave.
eSIM for Vietnam
You can install an eSIM before you leave, so you land in Hanoi already online for Grab and maps. After activation, the eSIM connects automatically to a supported network, such as Viettel, Vinaphone or Mobifone.
Local SIM card
Local prepaid SIMs from Viettel, Vinaphone or Mobifone are available everywhere, including the airport. Activating an eSIM beforehand saves time and skips finding a shop after landing.
Mobile coverage in Vietnam
Viettel, Vinaphone and Mobifone are the three largest networks, with strong coverage in cities like Hanoi and Ho Chi Minh City. Coverage varies in mountainous areas like Sapa or Ha Giang, but is strong in the major cities. On a north-south trip, coverage generally stays solid along the main routes.
Do you need a VPN?
Vietnam regulates the internet more tightly than neighbors like Thailand, with occasional blocks on news sites and social media around sensitive moments. A VPN can provide access to services that are locally restricted, this varies by provider and situation.
Practical tips
- Many travelers use Grab for taxis, food and even parcel delivery, expect daily data use
- Coverage varies in mountainous areas like Sapa or Ha Giang, but is strong in the major cities
- Train and bus journeys can pass through areas with limited signal, download offline maps in advance
- Check that your device supports eSIM before you leave
Our recommendation
For most travelers, an eSIM is the simplest solution for Vietnam: no roaming surprises and online the moment you land. Check our eSIM comparison for Vietnam for current options, or read more about VPNs for Vietnam.
Frequently asked questions
Do I need an eSIM in Vietnam?+
Not necessarily, but it's the fastest way to be online from arrival for Grab and maps.
Does roaming work with a Dutch or Belgian plan?+
Vietnam isn't covered by EU roaming rules, so roaming charges can add up fast. Check with your provider before you leave.
Is coverage in Sapa or Ha Giang as good as the cities?+
Not always. Coverage varies in mountainous areas, but is strong in Hanoi and Ho Chi Minh City.
Do I need a VPN in Vietnam?+
Vietnam regulates the internet more tightly than neighbors, with occasional blocks around sensitive moments. A VPN can help, but isn't a guarantee.
Can I keep my own number with an eSIM?+
Usually yes, on devices with dual-SIM support: your own SIM or eSIM stays active alongside the new Vietnamese eSIM.
Ready for your trip across Vietnam?
Check out our eSIM tips and recommended plans for Vietnam.
See eSIM for Vietnam