Hanoi eSIM
100 Vietnam plans · from $3.53
Hanoi's Old Quarter is 36 streets named after the trade once practised on them, and no two map apps agree on where any of them start. A travel eSIM keeps Grab working — which in Hanoi is not a convenience but the practical way to cross the city without negotiating a fare in the traffic.
Landing at Noi Bai (HAN)
The airport is 45 minutes north of the centre with no rail link, and the airport taxi touts are persistent. Booking a Grab from the arrivals hall with an already-active eSIM gives you a fixed price before you walk out.
eSIM plans that cover Hanoi
Hanoi is covered by every Vietnam plan below — there is no separate city-only eSIM to buy.
Choose a data plan
1 GB
7 days· 0.3 GB per $1
$3.53
5% back in credits
$3.76
5% back in credits
$4.41
5% back in credits
2 GB
15 days· 0.4 GB per $1
$5.26
5% back in credits
3 GB
30 days· 0.4 GB per $1
$6.77
5% back in credits
$8.07
5% back in credits
$8.43
5% back in credits
$9.60
5% back in credits
5 GB
30 days· 0.5 GB per $1
$9.69
5% back in credits
$12.39
5% back in credits
10 GB
30 days· 0.7 GB per $1
$14.56
5% back in credits
$14.79
5% back in credits
$16.71
5% back in credits
$18.80
5% back in credits
$19.97
5% back in credits
20 GB
30 days· 0.9 GB per $1
$23.20
5% back in credits
$23.20
5% back in credits
$27.75
5% back in credits
$29.16
5% back in credits
$34.00
5% back in credits
$39.54
5% back in credits
$40.73
5% back in credits
50 GB
30 days· 1.0 GB per $1
$50.21
5% back in credits
$55.09
5% back in credits
20 GB
Global - Light only60 days· 0.3 GB per $1
$60.50
5% back in credits
$66.42
5% back in credits
$79.62
5% back in credits
$81.03
5% back in credits
100 GB
30 days· 1.1 GB per $1
$88.02
5% back in credits
50 GB
Global - Light only90 days· 0.4 GB per $1
$142.03
5% back in credits
$158.83
5% back in credits
How “Unlimited” works: Never cut off — each plan gives a set amount of full-speed data, then a slower speed. The exact allowance and speed are shown on every plan.Read more
Unlimited plans never run out and your eSIM is never disconnected, but every one has a fair-use limit: a set amount of full-speed data, after which the speed is reduced. The amounts differ between plans — most give a daily full-speed allowance that refills every 24 hours from when you first activate the eSIM, while Premium plans give a larger allowance for the whole plan instead. Each plan states its own allowance and the speed after it before you buy. At the reduced speed, messaging, maps, email and light browsing still work; video streaming and video calls may not. If you want every gigabyte at full speed, choose a fixed-GB plan.
Which networks you'll be on in Hanoi
Siima eSIMs for Vietnam ride Viettel and Vinaphone. Viettel has the deepest national coverage — including the northern mountains and Ha Long Bay — and is the one to want if you are travelling beyond the city.
Coverage around Hanoi
Old Quarter and Hoan Kiem
Strong 4G throughout, with 5G in much of the centre. The dense tube-house architecture weakens indoor signal on upper floors of the narrow buildings.
Metro Line 2A and the ring roads
The elevated Cat Linh–Ha Dong line has signal along its whole route. Traffic-heavy ring roads are well covered, which matters when your Grab is re-routing constantly.
Ha Long Bay
Coverage is good around Ha Long city and the main cruise routes near shore. Signal drops among the far karst islands and in the caves — expect a genuinely offline stretch on an overnight cruise.
Sapa and Ninh Binh
Both popular overnight trips from Hanoi have coverage in the towns and along the main roads. Sapa's valley trekking routes and the Ninh Binh cave boat rides lose signal in places.
How much data you need
Hanoi is heavy on rideshare and translation: 4–5 GB for a week. If you are doing the full north-to-south run to Hue, Hoi An and Ho Chi Minh City, size for the whole trip — one plan covers the country.
Work it out with our data usage calculator →