Yes, but it varies. You will have excellent 4G/LTE coverage in all cities (Hanoi, Ho Chi Minh, Da Nang) and towns. On Ha Long Bay cruises, the signal is strong when near the coast but can be intermittent or slow when sailing deep into the limestone karsts. For mountainous areas like Sapa and the Ha Giang Loop, you will have a good signal in the towns but should expect dead zones while driving on remote mountain passes.
HELP CENTER
Is there internet on Ha Long Bay cruises or in Sapa/Ha Giang?
Updated April 22, 2026
Was this answer helpful?
Related questions
Other answers in this topic that travelers found useful.
How stable is the internet connection with eSIM Glow across the country?
eSIM Glow prides itself on providing a consistently stable and vibrant internet connection across your destination. We partner with top-tier…
Read answerAre there any hidden fees or contracts with eSIM Glow?
Transparency is key to the eSIM Glow experience. We believe in keeping things clear and simple, so you'll never encounter hidden fees or une…
Read answerWhen does my eSIM Glow plan validity period begin?
Your eSIM Glow plan’s validity period truly begins its countdown only when your eSIM connects to a local mobile network in your destination …
Read answerWhat if I encounter connection glitches with my eSIM Glow plan?
Should you ever hit a snag with your eSIM Glow connection, don't worry, we've got your back! Our friendly and responsive support team is alw…
Read answerWill eSIM Glow keep me online on the ferry to the Isle of Man?
Your eSIM Glow will provide a strong signal at the Douglas Sea Terminal , perfect for those last-minute posts before you embark. However, as…
Read answer