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Region in Quang Ninh, Vietnam

Internet in Ha Long Bay: speed, SIM cards and coworking

Updated October 2026Sources
301 MbpsMedian download

Is the internet good in Ha Long Bay?

Median fixed broadband in Vietnam is 301 Mbps and mobile is 220 Mbps (Speedtest Global Index, 2026-08). Wifi is fine in Bai Chay hotels and cafés. On cruises, mobile signal is patchy and wifi is slow or absent.

Getting online in Ha Long Bay

Details
Home fibreFibre exists in Ha Long city and Cat Ba town; most visitors use hotel wifi.
Cafés and coworkingWifi is fine in Bai Chay hotels and cafés. On cruises, mobile signal is patchy and wifi is slow or absent.
OutagesSignal drops among the islands.
Tourist SIMViettel, Vinaphone and MobiFone airport kiosks sell tourist SIMs with big data allowances; passport required. City shops are cheaper.
eSIMLocal carriers sell eSIMs to visitors.
CarriersViettel, Vinaphone, MobiFone
Monthly data plan₫100,000–250,000 ($3.9–9.6)
Blocked servicesTelegram has been blocked since mid-2025; other major apps work. VPNs are widely used.

Coworking in Ha Long Bay

There's no dedicated coworking scene here; people work from cafés and accommodation.

Internet speeds in Southeast Asia

National medians, Speedtest Global Index.

CountryFixedMobile
Singapore463 Mbps164 Mbps
Vietnam301 Mbps220 Mbps
Thailand299 Mbps134 Mbps
Malaysia179 Mbps165 Mbps
Philippines114 Mbps66 Mbps
Brunei86 Mbps254 Mbps
Laos60 Mbps45 Mbps
Cambodia55 Mbps112 Mbps
Indonesia51 Mbps66 Mbps
Myanmar25 Mbps—

Quick answers

Is the internet fast in Ha Long Bay?

Median fixed broadband in Vietnam is 301 Mbps and mobile is 220 Mbps (Speedtest Global Index, 2026-08). Wifi is fine in Bai Chay hotels and cafés. On cruises, mobile signal is patchy and wifi is slow or absent.

Which SIM card should I get in Ha Long Bay?

Viettel, Vinaphone and MobiFone airport kiosks sell tourist SIMs with big data allowances; passport required. City shops are cheaper.

Can I use an eSIM in Vietnam?

Yes. Local carriers sell eSIMs to visitors, and travel eSIMs work too.

More about Ha Long Bay

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Sources

Speeds are medians from Ookla's Speedtest Global Index, cited for reference. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.