HelloRoam eSIM for Vietnam: 1GB from $3.49 (2026)
Pricing verified May 2026 · By The Roaming Cost Desk
Short Answer:
HelloRoam covers Vietnam for $3.49 total (1GB on Viettel, Vinaphone). AT&T charges $12/day for the same trip. Verizon charges $12/day. You save $80.51 per week with HelloRoam. Instant QR install, no contract changes.
HelloRoam plans for Vietnam
Fixed data plans with no daily charges.
Fixed Data Plans
- ✓204+ carrier networks worldwide
- ✓180-day refund policy
- ✓Instant QR install
Unlimited Daily Plans
| Duration | eSIM Total | Per Day | AT&T Cost | You Save |
|---|---|---|---|---|
| 1 day | $4.25 | $4.25 | $12.00 | $7.75(65%) |
| 3 days8% off | $12.23 | $4.08 | $36.00 | $23.77(66%) |
| 7 days8% off | $28.53 | $4.08 | $84.00 | $55.47(66%) |
| 14 days11% off | $55.20 | $3.94 | $168.00 | $112.80(67%) |
| 30 days18% off | $108.98 | $3.63 | $360.00 | $251.02(70%) |
How HelloRoam works in Vietnam
Networks, activation, and compatibility.
Networks and Speed
HelloRoam connects to Viettel, Vinaphone in Vietnam. Average download speeds are 52 Mbps. Your data runs at the same speed as a local subscriber, not the throttled 2G that T-Mobile offers for free.
Activation Steps
- 1Purchase a Vietnam eSIM plan on HelloRoam.Choose fixed data or unlimited daily based on your trip length.
- 2Scan the QR code to install the eSIM.Takes under 2 minutes. Install before you board your flight.
- 3Enable the eSIM data line when you land in Vietnam.Go to Settings > Cellular > HelloRoam line > Turn on Data Roaming.
- 4Keep your carrier line for calls and texts.Your US/UK number stays active. Disable carrier data to prevent dual charges.
- 5Switch back when you return home.The eSIM stays installed for your next trip. No re-purchase needed if data remains.
Device Compatibility
HelloRoam works on iPhone XS and newer, Samsung Galaxy S20 and newer, Google Pixel 3a and newer, and most 2020+ Android phones with eSIM support. Check your phone settings for "Add eSIM" or "Add Cellular Plan" to confirm compatibility before purchase.
HelloRoam vs carrier roaming in Vietnam
Side-by-side cost comparison for a 7-day trip.
| Provider | 7-Day Cost | Data | Speed | Verdict |
|---|---|---|---|---|
| HelloRoam | $3.49 | 1GB | LTE/5G | Best value |
| AT&T | $84.00 | 2GB/day | LTE | Expensive |
| T-Mobile (free) | $0.00 | Unlimited | 128kbps | Unusable speed |
| Verizon | $84.00 | 5GB/day | LTE | Expensive |
HelloRoam vs other eSIM providers
Provider comparison for Vietnam.
HelloRoam vs Airalo in Vietnam
HelloRoam offers 1GB for $3.49 in Vietnam. Airalo offers 10GB for $25.00. Both connect to Viettel, Vinaphone. HelloRoam provides more carrier network coverage (204+ networks) and a 180-day refund policy.
HelloRoam vs Holafly in Vietnam
HelloRoam offers 1GB for $3.49 in Vietnam. Holafly offers Unlimited for $57.00. Both connect to Viettel, Vinaphone. HelloRoam provides more carrier network coverage (204+ networks) and a 180-day refund policy.
HelloRoam vs Saily in Vietnam
HelloRoam offers 1GB for $3.49 in Vietnam. Saily offers 10GB for $18.99. Both connect to Viettel, Vinaphone. HelloRoam provides more carrier network coverage (204+ networks) and a 180-day refund policy.
Vietnam travel connectivity tips
Data usage, Wi-Fi, and local context.