30 Days Unlimited 4G/5G Data Vietnam eSIM and Physical Card

What it is

This 30-day Vietnam data SIM gives you unlimited internet access on the 4G LTE and 5G networks of Vietnam's leading mobile operators. The eSIM option lets you download and activate your connection via QR code before departure — no physical card, no airport queue. If your phone doesn't support eSIM, the same plan is often available as a standard nano/micro physical SIM card delivered or picked up on arrival. Data is marketed as unlimited, but most plans apply a Fair Usage Policy (FUP): you receive a set amount of high-speed data each day (commonly 3 GB to 15 GB depending on the plan tier), after which speeds are throttled — typically to 128–256 kbps — until the next daily reset. Tethering and mobile hotspot are generally supported, though some providers cap hotspot usage separately. Coverage is strongest in Hanoi, Ho Chi Minh City, Da Nang, Hue, Hoi An, Nha Trang, and Phu Quoc; rural and mountainous areas rely on 4G and may see reduced speeds.

Highlights

• Dual-format flexibility: choose eSIM (QR code, zero physical card needed) or physical SIM card — same 30-day unlimited plan, pick what fits your device
• 4G/5G network coverage: runs on major Vietnamese carriers (Viettel, Vinaphone, or Mobifone) with near-nationwide 4G and expanding 5G in Hanoi, Ho Chi Minh City, and Da Nang
• High-speed daily data allowance: typically 3–15 GB of full-speed 4G/5G per day before Fair Usage Policy throttling kicks in — enough for maps, streaming, and video calls
• Mobile hotspot / tethering supported: share your connection with a laptop or tablet, ideal for remote workers and travel groups (hotspot may have a separate daily cap on some providers)
• Instant eSIM activation via QR code: scan the QR, install the profile in Settings, and your connection is live before you even board — no waiting at the airport SIM counter
• 30-day validity: covers extended trips, multi-city itineraries from north to south, or a month-long stay with no need to top up or renew

Good to know

• eSIM compatibility required for eSIM option: your phone must support eSIM (iPhone XS and later, Samsung Galaxy S20+, Google Pixel 3a+, and most flagship Android phones from 2020 onward); if unsure, check Settings > General > About on iPhone or Settings > Connections > SIM Manager on Android
• Install before you land: activate the eSIM at home on Wi-Fi — the profile installs in minutes via QR code scan, so you have data the moment you land in Vietnam
• Fair Usage Policy (FUP) applies: after the daily high-speed cap (often 3–15 GB depending on provider), speeds typically drop to around 128–256 kbps until midnight Vietnam time (UTC+7); basic browsing and messaging remain functional at throttled speeds
• Physical SIM registration: Vietnamese law requires passport-based ID registration for all SIM cards — eSIM plans purchased from international platforms are typically pre-registered for tourists, but physical SIMs bought at airports or shops may need on-site registration
• Best coverage cities: Hanoi, Ho Chi Minh City, Da Nang, Hue, Hoi An, Nha Trang, and Phu Quoc all have strong 4G; 5G is available in urban centers and expanding rapidly as of 2026
• Dual SIM phones: if your phone supports dual SIM + eSIM, you can keep your home SIM active for calls/texts while using the Vietnam eSIM for data — useful for receiving OTPs on your home number