- Reliability
- Moderate
Overall3.2/10Slower internet than about 70% of cities
Good to know
Good to Know
- Hoi An's ancient town has older broadband infrastructure; WiFi speeds vary 10–20 Mbps depending on accommodation and peak hours
- Guesthouse WiFi often oversells bandwidth and throttles in evening hours (6–9 PM); test connectivity before booking longer stays
- Viettel has by far the best 4G coverage nationwide (98.6%); essential if you plan day trips outside Hoi An
- Prepaid tourist SIM cards (150,000–350,000 VND / $6–$14) are affordable; buy at Da Nang airport or local retail shops
- 5G currently limited to central districts of Hanoi, HCMC, Da Nang; Hoi An relies on 4G LTE for mobile data
- Public WiFi is free but often unsecured; always use a VPN for sensitive work
- e-SIM activation requires stable internet before arrival; consider a physical SIM if arriving during off-hours
- For reliable remote work longer than a week, coworking spaces or hotels with dedicated fiber are more stable than free cafes
Home Broadband
- Reliability
- Inconsistent. Tourist-heavy hotels invest in broadband; budget guesthouses often do not. Peak evening hours (6–9 PM) see significant congestion.
- Availability
- Fiber available in central town; older residential infrastructure overall
Speed Mbps
- Typical Up
- 5–10
- Typical Down
- 10–20
- Note
- Older infrastructure means slower, less stable speeds than major cities; many guesthouses oversell bandwidth and throttle after 2–3 PM during peak hours
ISP Options
VNPT
- Note
- Vietnam Posts and Telecomms; government-owned
FPT
- Note
- Private ISP; available in some areas
Viettel
- Note
- Mobile-focused; fixed broadband in limited areas
SIM Card Costs
Plastic card itself
- Cost
- ₫50,000
- Plan Type
- Physical SIM card only (no data)
Prepaid tourist SIM + data (typical 4GB/day, 15–30 days)
- Cost
- ₫200,000
- Note
- Range: 150,000–350,000 VND depending on data allowance and duration
Range: 100,000–150,000 VND for substantial data plans
- Cost
- ₫120,000
- Plan Type
- Standard monthly data package (10GB+, 30 days)
Mobile Networks
Viettel
- Advantage
- Best nationwide rural coverage; only reliable option for off-the-beaten-path travel
- Coverage 4g
- 98.6% nationwide
- Coverage 5g
- 91.2% nationwide
- Market Share
- 54.2%
- Speed 4g Mbps
- 17–50 Mbps typical
- Speed 5g Mbps
- 600+ Mbps (major urban areas only)
- Hoi An Coverage
- Usable coverage with occasional terrain/remoteness signal effects
Vinaphone
- Advantage
- Many plans include local phone number for Grab/OTP; nearly identical speed to Viettel in cities
- Coverage 4g
- Strong in urban areas
- Coverage 5g
- Available in major cities only
- Market Share
- 30%
- Speed 4g Mbps
- 85+ Mbps (comparable to Viettel in cities)
- Hoi An Coverage
- Good coverage, typical for coastal area
Mobifone
- Advantage
- Budget-friendly; acceptable for city stays only
- Coverage 4g
- Patchy rural coverage; good in urban centers
- Coverage 5g
- Still rolling out
- Market Share
- 20%
- Speed 4g Mbps
- 71+ Mbps (download); slower than Viettel/Vinaphone
- Hoi An Coverage
- Adequate in town; degrades in remote areas
Connectivity Reliability Tier
moderate
Connectivity Reliability Tier Rationale
Hoi An offers widespread mobile coverage and easy e-SIM/SIM access plus fiber in central areas, but home broadband and public WiFi are inconsistent with notable peak-hour congestion and older infrastructure outside the town center.
e-SIM
- Caveat
- Requires stable internet to activate; not ideal for remote/rural first legs of trip
- Advantage
- Buy online before departure; QR code activation upon arrival; no wait at airport
- Cost Range
- ₫290,000
- Availability
- Yes; major carriers offer e-SIM plans
- Compatibility
- iPhone XR+ and Samsung S20+ newer models
- Cost Note
- Range: $10.90–$12 USD for 7–30 days; 2–5GB/day data; higher price than physical SIM but no passport required, no queue, instant delivery
Public Wi-Fi
- Reliability
- Hits or miss; highly variable quality
- Availability
- Widespread in cafes, hotels, restaurants
- Security Note
- Often unsecured; use VPN when connecting to public networks
Tips For Nomads
Tips For Nomads
- Test WiFi before committing to longer guesthouse stays; many throttle after peak hours
- For reliable remote work: upgrade to Viettel for best rural signal if you plan to venture outside Hoi An
- Buy SIM cards at the airport (Da Nang is nearest international airport, ~30 km away) or in-town retail chains to avoid service surcharges
- For video calls and streaming, aim for 5GB/day or higher on mobile data plan
- If needing a local Vietnamese phone number for Grab/OTP, choose Vinaphone or Mobifone over Viettel (which offers data-only plans)
AI-generated estimateData refreshed July 2026
Sources cited for this category
These are the sources cited in this connectivity & internet research for this city. Individual figures may not each trace to one of them.
More About Hoi An
Data last updated July 2026 · Verify anything important.