{"id":44994,"date":"2026-09-30T17:23:28","date_gmt":"2026-09-30T15:23:28","guid":{"rendered":"https:\/\/povnomad.com\/vietnam-esim-north-to-south-coverage\/"},"modified":"2026-10-10T22:57:41","modified_gmt":"2026-10-10T20:57:41","slug":"vietnam-esim-north-to-south-coverage","status":"publish","type":"post","link":"https:\/\/povnomad.com\/en\/vietnam-esim-north-to-south-coverage\/","title":{"rendered":"Vietnam North to South 2026: eSIM Coverage from Ha Long and Sapa to the Mekong Delta"},"content":{"rendered":"

One Vietnam eSIM covers a north-to-south trip from Hanoi, Ha Long Bay and Sapa to Hoi An, Da Lat and the Mekong Delta. The POVNOMAD Vietnam eSIM<\/a> names MobiFone and Vietnamobile as partner networks and costs \u20ac9.90 for 7 days or \u20ac22.90 for 21 days of Unlimited Smart (1 GB of high-speed data a day, then up to 1 Mbit\/s). Airalo charges \u20ac24.50 and Holafly \u20ac25.50 for seven unlimited days. Prices as of 30 September 2026.<\/p>\n

From April to June 2026, Opensignal rated Viettel’s coverage at 8.4 of 10 points, Vinaphone’s at 5.5 and MobiFone’s at 4.3. None of the three single-country eSIMs compared here names Viettel as a partner; our Southeast Asia eSIM does. In Ha Long Bay, limestone islands block the signal, and two new masts deep in the bay went live only in early 2026.<\/p>\n

Which networks do Vietnam eSIMs use, and which one reaches the mountains?<\/h2>\n

Each provider names a different Vietnamese network. As of 30 September 2026:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
<\/th>\nPOVNOMAD Vietnam<\/th>\nPOVNOMAD Southeast Asia (8 countries)<\/th>\nAiralo Vietnam<\/th>\nHolafly Vietnam<\/th>\n<\/tr>\n<\/thead>\n
Network named in Vietnam<\/td>\nMobiFone, Vietnamobile<\/td>\nViettel<\/td>\nVNPT (Vinaphone)<\/td>\nGPC Vinaphone (VNPT)<\/td>\n<\/tr>\n
Unlimited, 7 days<\/td>\n\u20ac9.90<\/td>\n\u20ac15.90<\/td>\n\u20ac24.50<\/td>\n\u20ac25.50<\/td>\n<\/tr>\n
Unlimited, 15 days<\/td>\n\u20ac19.90<\/td>\n\u20ac26.90<\/td>\n\u20ac43.50<\/td>\n\u20ac46.90<\/td>\n<\/tr>\n
Unlimited, 21 days<\/td>\n\u20ac22.90<\/td>\n\u20ac34.90<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n
Unlimited, 30 days<\/td>\n\u20ac30.90<\/td>\n\u20ac49.90<\/td>\n\u20ac62.50<\/td>\n\u20ac68.90<\/td>\n<\/tr>\n
High-speed data per day<\/td>\n1 GB, then up to 1 Mbit\/s<\/td>\n1 GB, then up to 1 Mbit\/s<\/td>\n3 GB, then 1 Mbps<\/td>\nno figure; throttling lasts one day at most<\/td>\n<\/tr>\n
Hotspot<\/td>\nyes<\/td>\nyes<\/td>\nno figure on the Vietnam page<\/td>\n1 GB per day of validity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Read on 30.09.2026 on povnomad.com, airalo.com (Vietnam page) and esim.holafly.com\/de (Vietnam page). Vietnam eSIM prices for the standard IP; the Singapore-IP variant costs more. The Southeast Asia eSIM names Viettel on its English product page. Our product pages list networks as examples and note that partners can change at short notice.<\/small><\/p>\n

Opensignal measured Vietnam’s four networks from 1 April to 29 June 2026. Viettel led the Coverage Experience category with 8.4 of 10 points, ahead of Vinaphone (5.5), MobiFone (4.3) and Vietnamobile (1.4). Measured by time connected, MobiFone came first: its users had a signal 98.9 percent of the time, Viettel users 96.2 percent (Opensignal, August 2026<\/a>). nPerf’s ranking for April 2025 to March 2026 put Vinaphone first with 74,587 points, Viettel second and MobiFone third; MobiFone had the fastest average download at 87.27 Mbit\/s.<\/p>\n

In the cities, where most of Opensignal’s time-on-network data comes from, MobiFone holds up well. Viettel’s lead shows in coverage, which Opensignal measures across the places people live, work and travel. Your personal eSIM link lists the networks your eSIM can use under “Networks”. If you spend several days in the northern mountains, our Southeast Asia eSIM<\/a> is the option that names Viettel. It costs more: \u20ac26.90 for 15 days against \u20ac19.90 for the Vietnam eSIM.<\/p>\n

How good is reception in Hanoi, Ha Long Bay, Sapa, Hoi An, Da Lat and the Mekong Delta?<\/h2>\n

No operator guarantees a signal at a named spot, and we found place-specific network data only for Hanoi, Ha Long Bay and Sapa. As of 30 September 2026:<\/p>\n\n\n\n\n\n\n\n\n\n\n
Place<\/th>\nRegion<\/th>\nWhat we found<\/th>\nWettest and driest month (mean rainfall)<\/th>\n<\/tr>\n<\/thead>\n
Hanoi<\/td>\nnorth, capital<\/td>\nMobiFone launched 5G in March 2025, first in major city centres<\/td>\nAugust 273.7 mm, December 19.5 mm<\/td>\n<\/tr>\n
Ha Long Bay<\/td>\nnortheast coast, cruises from Ha Long city<\/td>\nin 2024 masts stood only on Ti Top island (shared by MobiFone, VinaPhone and Viettel) and on Hon Rong (Viettel); in early 2026 two new masts went live at Cong Do and Vung Vieng fishing village, 2G and 4G, range about 10 to 15 km<\/td>\nno station data found<\/td>\n<\/tr>\n
Sapa<\/td>\nnorthern mountains, Lao Cai province<\/td>\nViettel ran 12 5G sites in Sa Pa town in October 2024; nothing found for the hill villages<\/td>\nJuly 461.0 mm, December 65.7 mm<\/td>\n<\/tr>\n
Hoi An<\/td>\ncentral coast, near Da Nang<\/td>\nno place-specific network data found<\/td>\nDa Nang station: October 628.0 mm, February 23.6 mm<\/td>\n<\/tr>\n
Da Lat<\/td>\nCentral Highlands<\/td>\nno place-specific network data found<\/td>\nSeptember 283.4 mm, January 9.1 mm<\/td>\n<\/tr>\n
Mekong Delta<\/td>\nsouth<\/td>\nno place-specific network data found<\/td>\nCan Tho station: September 451.4 mm, February 3.8 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Sources, read on 30.09.2026: Ministry of Science and Technology, 28.03.2025 (MobiFone 5G); VietNamNet, 01.06.2024, and Tien Phong, 31.08.2026<\/a> (Ha Long Bay); Bao Lao Cai, 16.10.2024 (Sapa). Rainfall: long-term monthly means of the stations named, as listed on Wikipedia (Vietnam Institute for Building Science and Technology; Da Lat: Dia chi Da Lat).<\/small><\/p>\n

On a Ha Long Bay cruise, plan for gaps even with the new masts. Quang Ninh province is surveying about ten more spots for satellite internet in 2026, because masts alone cannot close the gaps between the limestone islands, Tien Phong reported. Download the cruise itinerary and your return transfer before you board.<\/p>\n

Does the Reunification Express have signal along the way?<\/h2>\n

The North\u2013South railway runs 1,726 km from Hanoi to Ho Chi Minh City. The fastest trains, SE3 and SE4, take about 33 hours 40 minutes, and the line passes 27 tunnels with a combined length of 8,335 m, according to Wikipedia. In a tunnel, plan without a connection. We found no current measurement of mobile reception along the line.<\/p>\n

Before a night train, download films, the map of your arrival city and the hotel address. The high-speed gigabyte of Unlimited Smart renews every 24 hours; after that, maps and messengers keep running at up to 1 Mbit\/s.<\/p>\n

Do you have to register a SIM or eSIM in Vietnam?<\/h2>\n

Only if you buy a Vietnamese SIM. Decree 163\/2024\/ND-CP of 24 December 2024 requires operators to verify subscriber data, and Circular 08\/2026\/TT-BKHCN added a face check from 15 April 2026. What a local tourist SIM costs and why unverified SIMs get blocked is in our guide Vietnam SIM card for tourists<\/a>. Foreigners register with their passport, and the operator compares the data with the national entry and exit database (LuatVietnam<\/a>).<\/p>\n

A travel eSIM bought abroad roams on Vietnamese networks. Our product page lists no identity check, and Airalo’s Vietnam plan data shows none either (30 September 2026). Our Unlimited Smart runs up to 30 days for \u20ac30.90, and you can top it up on the same eSIM.<\/p>\n

Unlimited or a data package: what fits a north-to-south route?<\/h2>\n

Our data check<\/a> counts 300 to 500 MB a day for maps and messaging, 1 to 2 GB for social media and video calls, and 3 GB or more for streaming or remote work. Four typical routes, prices as of 30 September 2026:<\/p>\n\n\n\n\n\n\n\n\n
Route<\/th>\nPOVNOMAD<\/th>\nAiralo unlimited<\/th>\nHolafly<\/th>\n<\/tr>\n<\/thead>\n
1 week Hanoi with an overnight Ha Long Bay cruise<\/td>\n\u20ac9.90 Unlimited Smart 7 days<\/td>\n\u20ac24.50<\/td>\n\u20ac25.50<\/td>\n<\/tr>\n
2 weeks Hanoi, Sapa and Hoi An<\/td>\n\u20ac19.90 Unlimited Smart 15 days, or \u20ac26.90 with the Southeast Asia eSIM (Viettel)<\/td>\n\u20ac43.50<\/td>\n\u20ac46.90<\/td>\n<\/tr>\n
3 weeks from Hanoi to the Mekong Delta by train<\/td>\n\u20ac22.90 Unlimited Smart 21 days<\/td>\n\u20ac62.50 (30 days, no 21-day plan)<\/td>\n\u20ac68.90 (30 days, no 21-day plan)<\/td>\n<\/tr>\n
A month in Hoi An or Da Lat with daily video calls<\/td>\n\u20ac86.90 Unlimited L 30 days (2 GB a day)<\/td>\n\u20ac62.50 (3 GB a day)<\/td>\n\u20ac68.90<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Sources: povnomad.com, airalo.com, esim.holafly.com\/de, read on 30.09.2026. A day means 24 hours from activation. Unlimited L runs with a Singapore IP. After the daily allowance, Smart and L continue at up to 1 Mbit\/s, Airalo at 1 Mbps.<\/small><\/p>\n

On the first three routes our Vietnam eSIM costs less than half of what Airalo and Holafly charge. The last row goes to Airalo: 3 GB a day for 30 days at \u20ac62.50, \u20ac24.40 less than our Unlimited L with 2 GB a day. If you work on the apartment Wi-Fi, 20 GB for 30 days costs \u20ac20.90 with us and \u20ac26.50 at Airalo. The full price table is in our Vietnam eSIM comparison<\/a>, and our unlimited eSIM page<\/a> explains the tiers.<\/p>\n

What does the rainy season mean for your connection?<\/h2>\n

Along a north-to-south route, the wet months shift from place to place. In the long-term means, December is the driest month in Hanoi (19.5 mm) and Sapa (65.7 mm), while Da Nang, next to Hoi An, still averages 218.4 mm that month. Da Lat gets 9.1 mm in January, Can Tho in the Mekong Delta 3.8 mm in February. In October, Da Nang averages 628.0 mm, more than any other month at any station in the table.<\/p>\n

Rain does not switch off an eSIM, but on a wet day you want your documents at hand without a connection. Keep bookings, train tickets and addresses on the phone itself, not in an app that needs mobile data.<\/p>\n

You can install the eSIM at home on Wi-Fi (instructions for iPhone and Android<\/a>). The validity starts at the first connection to the partner network in Vietnam, and you have 120 days after purchase to activate it. The eSIM carries data only, so keep your home SIM switched on for SMS codes from your bank.<\/p>\n

Frequently asked questions<\/h2>\n
\n

Does one Vietnam eSIM work from Hanoi to the Mekong Delta?<\/h3>\n

Yes. A Vietnam eSIM covers the whole country, so you keep the same profile in Hanoi, Ha Long Bay, Sapa, Hoi An, Da Lat and the Mekong Delta. The POVNOMAD Vietnam eSIM costs \u20ac22.90 for 21 days of Unlimited Smart. No provider guarantees a signal at a named spot. As of 30.09.2026.<\/p>\n

Viettel, Vinaphone or MobiFone: which network is best for Sapa and the mountains?<\/h3>\n

For coverage, Viettel. From April to June 2026, Opensignal rated Viettel’s coverage at 8.4 of 10 points, Vinaphone’s at 5.5 and MobiFone’s at 4.3. Our Vietnam eSIM names MobiFone and Vietnamobile, Airalo and Holafly name Vinaphone. Our Southeast Asia eSIM names Viettel and costs \u20ac26.90 for 15 days.<\/p>\n

Is there mobile signal on a Ha Long Bay cruise?<\/h3>\n

In parts of the bay. The limestone islands block the signal, and in 2024 masts stood only on Ti Top and Hon Rong. In early 2026 two new masts with 2G and 4G went live at Cong Do and Vung Vieng, with a range of about 10 to 15 km. Download your itinerary before you board.<\/p>\n

Do tourists have to register a SIM or eSIM in Vietnam?<\/h3>\n

Only a Vietnamese SIM. Since 15 April 2026, operators check new subscribers with a face photo, and foreigners register with their passport. A travel eSIM bought abroad roams on Vietnamese networks. Our product page lists no identity check, and Airalo’s plan data shows none (30.09.2026).<\/p>\n

Does my eSIM work on the night train from Hanoi to Hue or Saigon?<\/h3>\n

We found no current measurement of reception along the line. The North\u2013South railway runs 1,726 km and passes 27 tunnels, according to Wikipedia, and in a tunnel you have no connection. Download films and maps before departure.<\/p>\n

How much is an eSIM for three weeks in Vietnam?<\/h3>\n

\u20ac22.90 at POVNOMAD for 21 days of Unlimited Smart with 1 GB of high-speed data a day. Airalo and Holafly have no 21-day plan and charge \u20ac62.50 and \u20ac68.90 for 30 days. With our Southeast Asia eSIM, which names Viettel, 21 days cost \u20ac34.90. As of 30.09.2026.<\/p>\n

Can I share my Vietnam eSIM data with a laptop?<\/h3>\n

Yes. Hotspot is included in the POVNOMAD Vietnam eSIM. Holafly limits sharing to 1 GB per day of validity, 7 GB in total on a 7-day plan. Airalo’s Vietnam page gives no hotspot figure. For daily video calls, Airalo’s 3 GB a day at \u20ac62.50 for 30 days beats our Unlimited L.\n<\/p><\/div>\n

As of 30 September 2026. All prices were read in euros on that day on povnomad.com, airalo.com and esim.holafly.com; network data come from Opensignal and nPerf, rainfall means from the station data listed on Wikipedia. Offers can change at any time.<\/p>\n","protected":false},"excerpt":{"rendered":"

One Vietnam eSIM covers a north-to-south trip from Hanoi, Ha Long Bay and Sapa to Hoi An, Da Lat and the Mekong Delta. The POVNOMAD Vietnam eSIM names MobiFone and Vietnamobile as partner networks and costs \u20ac9.90 for 7 days or \u20ac22.90 for 21 days of Unlimited Smart (1 GB of high-speed data a day, […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1934],"tags":[],"class_list":["post-44994","post","type-post","status-publish","format-standard","hentry","category-sim-guide"],"yoast_head":"\nVietnam eSIM Coverage 2026: Ha Long, Sapa, Mekong Delta - POVNOMAD<\/title>\n<meta name=\"description\" content=\"Vietnam eSIM coverage from Hanoi, Ha Long Bay and Sapa to Hoi An, Da Lat and the Mekong Delta. 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