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Best eSIM for Vietnam

We compare 19 plans from 6 eSIM providers for Vietnam, in pounds, show what your UK network would charge instead, and share the local mobile tips worth knowing.

Prices last checked 25 September 2026

eSIMs from£3.0119 plans · 6 providers

Quick answers

  • The cheapest data plan here is £3.01.
  • Best value for a longer stay: Ubigi 10GB for 30 days, £9.73.
  • Unlimited data from Saily: £36.97 for 30 days.
  • Vietnam is outside the EU, so the big UK networks charge about £7 to £8 a day here.
  • WhatsApp, FaceTime and Zalo calls work normally, but Vietnam ordered Telegram to be blocked from June 2025.
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Prices

Vietnam eSIM prices compared

All 19 plans we track, cheapest first within each length.

ProviderDataLastsPrice (approx. in £)
Sim Local 1GB 3 days £3.40US$4.50 · £3.40/GB Go to Sim Local Provider link
Saily 1GB 7 days £3.01US$3.99 · £3.01/GB Go to Saily Provider link
NomadVietnamobile, MobiFone, Vinaphone 1GB 7 days £3.02US$4.00 · £3.02/GB Go to Nomad Provider link
NomadVietnamobile, MobiFone, Vinaphone 5GB 30 days £7.55US$10.00 · £1.51/GB Go to Nomad Provider link
Saily 5GB 30 days £8.29US$10.99 · £1.66/GB Go to Saily Provider link
Sim Local 5GB 30 days £8.49US$11.25 · £1.70/GB Go to Sim Local Provider link
UbigiBest value 10GB+VNPT 10GB 30 days £9.73US$12.90 · £0.97/GB Go to Ubigi Provider link
NomadVietnamobile, MobiFone, Vinaphone 10GB 30 days £12.83US$17.00 · £1.28/GB Go to Nomad Provider link
Show all 19 Vietnam tariffs
ProviderDataLastsPrice (approx. in £)
Saily 10GB 30 days £13.57US$17.99 · £1.36/GB Go to Saily Provider link
Sim Local 10GB 30 days £13.77US$18.25 · £1.38/GB Go to Sim Local Provider link
AiraloVNPT Unlimited 3 days £8.68US$11.50 Go to Airalo Provider link
HolaflyVinaphone (VNPT) Unlimited 3 days £8.98US$11.90 Go to Holafly Provider link
NomadVietnamobile, MobiFone, Vinaphone Unlimited 5 days £13.58US$18.00 Go to Nomad Provider link
AiraloVNPT Unlimited 7 days £20.37US$27.00 Go to Airalo Provider link
HolaflyVinaphone (VNPT) Unlimited 7 days £20.75US$27.50 Go to Holafly Provider link
Sim Local Unlimited 7 days £23.96US$31.75 Go to Sim Local Provider link
Saily Unlimited 30 days £36.97US$48.99 Go to Saily Provider link
AiraloVNPT Unlimited 30 days £52.07US$69.00 Go to Airalo Provider link
HolaflyVinaphone (VNPT) Unlimited 30 days £55.76US$73.90 Go to Holafly Provider link

Prices checked 25 September 2026. Most travel eSIM companies charge in US dollars, even to UK customers, so your bank converts the price when you pay. We show pounds at that day's rate (US$1 = £0.75458) with the dollar price underneath.

Price per GB in Vietnam

Each provider's best-value 30-day plan of 5GB or more, as a price per GB. Lower is better; orange = cheapest.

Ubigi£0.97
Nomad£1.28
Saily£1.36
Sim Local£1.38
Roaming

What UK networks charge in Vietnam

A week in Vietnam: what it costs

7 days of data on each UK network's roaming (where there's a daily price) against the cheapest 5GB+ eSIM (Nomad). Orange bar = eSIM.

EE£56
Vodafone£56
Three£56
O2£49
iD Mobile£35
Sky Mobile£14
Cheapest eSIM£7.55
Your networkPer dayA weekDetails
EE£8 a day£56Zone 3 24h pass £8, buy on arrival Check with your network
O2£7 a day£49O2 Travel bolt-on £7/day (Ultimate plans include some destinations) Check with your network
Vodafone£8 a day£56Global Roam Zone C/D, approx £8/day Check with your network
Three£8 a day£56Go Roam Around the World Extra £8/day (£7 on older plans), 12GB
giffgaffAdd-ons only–no daily pass; travel data add-on 1GB/5GB/10GB, 30 days, approx £6-£15 per GB tier
SMARTYAdd-ons only–PAYG by band (Roaming 1 e.g. US/TR 10p/MB, higher bands up to £5/MB) Check with your network
iD Mobile£5 a day£35Roam Beyond add-on from £5 (2GB, 1 day) Check with your network
VOXIAdd-ons only–PAYG roaming pass rates by zone Check with your network
LebaraAdd-ons only–add-on 1GB/8 days £5 or 3GB/15 days £15 Check with your network
Tesco MobileAdd-ons only–not Home From Home; PAYG or data bundle Check with your network
Sky Mobile£2 a day£14Roaming Passport £2/day, 120 destinations (country not confirmed) Check with your network
Lyca MobileAdd-ons only–PAYG rates / country bundles, not checked Check with your network

Checked 25 September 2026. Roaming prices depend on your exact plan and when you joined, so check with your network before you travel.

Local know-how

Mobile in Vietnam: what to know

Mobile networks

ViettelLargest network (about 54% market share) and the best coverage in mountains and on islands.
VinaPhoneSecond largest; competitive in cities but weaker in mountainous and rural areas.
MobiFoneThird network, mainly urban; its Hi Vietnam app sells tourist plans with passport video verification.

Coverage

Coverage is good in cities and along the main tourist route, but in the far north (Ha Giang, Sapa) and on islands Viettel is noticeably more reliable than MobiFone or VinaPhone.

Wi-Fi

Free Wi-Fi is available in almost every hotel and cafe, but it is unreliable when you are moving between cities, so most people still want mobile data.

WhatsApp and FaceTime calls

WhatsApp, FaceTime and Zalo calls work normally, but Vietnam ordered Telegram to be blocked from June 2025.

Buying a local SIM

Easy. Official carrier booths at Noi Bai (Hanoi), Tan Son Nhat (Ho Chi Minh City), Da Nang and Cam Ranh airports, plus carrier stores and phone shops like The Gioi Di Dong and FPT Shop in town. Your passport is scanned and a face photo taken on the spot. Tourist SIMs with data cost roughly 60,000-270,000 VND.

Emergency number

113 police, 115 ambulance, 114 fire, 112 search and rescue (operators speak Vietnamese only)

Tips for UK travellers

  1. Buy only where your passport is scanned and your photo is taken on the spot; unregistered SIMs from unmarked stalls can cut off within days.
  2. Heading to Ha Giang, Sapa or the islands? Pick Viettel for the best signal.
  3. Vietnam ordered Telegram blocked from June 2025, so use WhatsApp or Zalo to keep in touch with hotels, guides and drivers.
  4. Emergency lines are answered in Vietnamese only, so save your hotel's number and ask them to call for you if you can.
FAQ

Common questions

Do I need a passport to buy a SIM card in Vietnam?

Yes. SIMs must be registered with your passport and a face photo, and unregistered cards sold without ID tend to be cut off within days.

Does Telegram work in Vietnam?

No. Vietnam ordered Telegram blocked in June 2025; WhatsApp and the local app Zalo still work.

Which Vietnamese network is best for Sapa and Ha Giang?

Viettel, which has the widest coverage in mountain areas; MobiFone is best avoided for rural northern trips.

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