Best eSIM for Vietnam in 2026 — Viettel & Vinaphone 5G Plans Compared
Viettel is Vietnam's largest network with 5G across 91% of the population; Vinaphone is a close second. A 1-week travel eSIM costs about US$6–11 with consistent 4G/5G in Hanoi, HCMC, and Da Nang. Side-by-side comparison and which eSIM to pick.
Published June 27, 2026·6 min read
Summary
For a 1-week trip across Hanoi, Ho Chi Minh City, or Da Nang, a 5–7 GB travel eSIM on Viettel or Vinaphone costs about US$6–11and delivers consistent 4G/5G. Viettel is Vietnam's largest carrier, reaching roughly 98.6% of the population on 4G and 91.2% on 5G — a fraction of the cost of home-carrier roaming for the same week.
Vietnam mobile networks in 2026
Vietnam has three main carriers — Viettel, Vinaphone, and MobiFone. Viettel has the largest network and the widest rural reach, with Vinaphone close behind and strong 5G in the major cities; MobiFone is reliable in towns and cities but thinner in remote areas. Coverage is excellent across Hanoi, HCMC, Da Nang, Hoi An, Nha Trang, and Ha Long, so most itineraries are well served by a Viettel- or Vinaphone-backed eSIM.
Plan size by trip length
| Trip length | Data | Typical price | Best for |
|---|---|---|---|
| 3–5 days | 3–5 GB | US$4–7 | City break, light use |
| 7 days | 5–7 GB | US$6–11 | Standard tourist week |
| 10–15 days | 10–15 GB | US$11–18 | North-to-south route |
| 10+ days | Unlimited | US$18–25 | Digital nomad, heavy hotspot |
eSIM vs roaming vs pocket Wi-Fi for Vietnam
| Option | Cost (7 days) | Setup time | Coverage |
|---|---|---|---|
| eSIM (Viettel / Vinaphone) | US$6–11 | ~5 min pre-install | Excellent (local carrier) |
| Carrier roaming (US/UK) | US$70–105 | Instant | Medium (partner-dependent) |
| Pocket Wi-Fi | US$30–50 | Airport pickup | Good (extra device to charge) |
Picking the right Vietnam eSIM
City break (3–5 days):a 3–5 GB plan at US$4–7 is plenty for Grab, maps, and social.
Standard tourist week:a 5–7 GB Viettel- or Vinaphone-backed plan at US$6–11.
North-to-south route or nomad stay (10+ days):15 GB or an unlimited plan at US$18–25 so hotspot tethering stays usable. Browse our Vietnam eSIM plans for the full lineup.
FAQ
QWhich Vietnamese carrier has the best coverage for tourists in 2026?
AViettel has the widest reach — about 98.6% 4G and 91.2% 5G population coverage — making it the safest pick if your trip goes beyond the big cities. Vinaphone is a strong second with solid 5G in Hanoi, HCMC, and Da Nang. Most travel eSIMs for Vietnam route through one of these two.
QHow much data do I need for a 1-week Vietnam trip?
A5–7 GB (or roughly 1 GB/day) covers Google Maps, Grab rides, messaging, and social for a standard week — about US$6–11. Heavy users who tether or stream should pick 10 GB+ or an unlimited daily-throttle plan.
QDo Vietnam travel eSIMs come with a local phone number?
AMost travel eSIMs are data-only and do not include a Vietnamese number. That is fine for tourists, since Grab, maps, and WhatsApp run on data. If you specifically need a local number, choose a Vinaphone-based plan that bundles one, or buy a physical SIM.
QDo I need to register my eSIM with my passport in Vietnam?
ANo — travel eSIMs sold by international providers like YonoSIM work without local registration. You buy online, scan the QR, and connect on arrival. Buying a physical local SIM in Vietnam does require passport registration at the shop.
Bottom line
For most Vietnam tourists, a 5–7 GB Viettel- or Vinaphone-backed travel eSIM at US$6–11 is the call. Pre-install at home, land in Hanoi or HCMC with 5G on, no airport SIM queue, no roaming-bill surprise. For longer north-to-south routes or hotspot-heavy use, jump to unlimited.