Vietnam eSIM on Viettel, from $9.90

A real Vietnamese number on a native Viettel subscriber profile — not roaming. Most international eSIM providers sell a data-only roaming profile that connects to Viettel's towers under a foreign agreement; this is a local Viettel SIM issued the same way a Vietnamese resident's would be, just delivered as an eSIM before you fly.

Viettel — Vietnam's largest mobile network by coverage, including 4G/5G reach into rural and mountain areas that smaller networks don't cover as well, which matters if your route goes beyond Hanoi and Ho Chi Minh City into places like Sapa, Ha Giang, or the central highlands. Because this eSIM is a genuine Viettel subscriber profile rather than a roaming line piggybacking on Viettel's towers, you get the same network quality a local resident would — full 4G/5G speeds, not a throttled roaming tier. It also carries a real Vietnamese phone number, which some travelers only realize they need mid-trip when a hotel, ride-hailing app, or local bank sends a one-time SMS code that a data-only roaming eSIM has no number to receive.

5GB of high-speed data per day, included on every plan length (7, 15 or 30 days) — the daily allowance doesn't change with the plan you pick, only the number of days does.

Yes — hotspot/tethering is fully supported on every plan, so you can share your Vietnam data connection with a laptop, tablet, or a travel companion's phone the same way you would with your normal SIM at home. There's no extra toggle to unlock or fee to pay; it's the standard Personal Hotspot (iPhone) or Hotspot & tethering (Android) setting built into your phone. Just make sure the Viettel eSIM is set as the active data line before turning hotspot on, since a dual-SIM phone defaults to sharing whichever line is currently your primary data connection. One practical note: hotspotting several devices off one eSIM draws down your daily 5GB allowance faster than browsing on the phone alone, since every connected device shares the same daily pool.

No — this is eSIM-only. Your phone needs to be eSIM-capable and carrier-unlocked. Keep your home SIM in the other slot for calls on your usual number; let this eSIM carry your Vietnam data and number.