What a MobiFone monthly 4G package actually is
MobiFone sells its data bundles in two shapes. Daily and short-cycle packages are what most visitors see advertised. Monthly packages (gói cước tháng) are the ones designed for people who live in Vietnam: they renew every 30 days, they are tied to a registered SIM, and the sign-up usually happens at a MobiFone store with identification.
The package codes you see quoted — things like V90B, or the various M-series and 70-series codes — are the exact names MobiFone sells them under. Treat those codes as the product record: they tell you what the bundle is called, not what it will do on your phone in Da Nang on a Tuesday.
Why this matters if you are only visiting
A monthly package assumes a relationship with the carrier that a short-stay visitor does not have. The practical friction is:
- Registration. A new SIM in Vietnam is registered against ID. Tourists can buy prepaid tourist SIMs, but the monthly bundles are aimed at residents.
- Renewal. A 30-day cycle only makes sense if you are there for the cycle.
- Language. Store staff in tourist areas often speak English; outside them, less so.
- Time. You are on holiday. An hour in a phone shop is an hour not spent somewhere better.
None of this makes MobiFone a bad network. It is one of Vietnam's three main carriers, and you can read how it stacks up against the others in our comparison of Viettel, VinaPhone and MobiFone. The question is simply whether a resident-style monthly plan is the right shape for a two-week trip. Usually, it is not.
The traveller-shaped alternative
A prepaid Vietnam eSIM does the same job without the shop visit. You buy it before departure, install it while you still have home Wi-Fi, and it connects when you land. There is no ID registration, no monthly cycle to manage, and no need to find a MobiFone counter at the airport.
If you want the full picture of what is on sale, the Vietnam eSIM store lists the current plans with data allowances and validity periods side by side. Pick the one that matches your trip length, not the one with the biggest number on the box.
A quick decision table
| Your situation | Sensible choice |
|---|---|
| In Vietnam 3–30 days, want data on landing | Prepaid Vietnam eSIM |
| Staying months, have a Vietnamese address and ID | Local SIM with a monthly package |
| Two phones, one traveller | eSIM on the main phone, see our hotspot guide |
| Arriving late at night | eSIM, installed before you fly |
| Need a local phone number for calls | Read does a Vietnam eSIM come with a phone number? |
If you do want a local SIM anyway
There is nothing wrong with buying a physical SIM at the airport. It works, and for some travellers the ritual is part of arriving. What you should know is that airport counters have opening hours, queues and prices that reflect the location. Our guides to Tan Son Nhat and Noi Bai walk through what is actually on sale at each, and the Da Nang airport guide covers the middle of the country.
If you land somewhere smaller, the calculus shifts further towards eSIM. A counter that closes at 22:00 is no help on a 23:40 arrival.
What to check before you buy anything
Three things decide whether a plan works for you:
- Phone compatibility. An eSIM needs an eSIM-capable handset. Our Android compatibility guide and the iPhone setup guide cover the models that work.
- Data volume. Match the allowance to how you actually use the phone. Maps and messaging are light; video and hotspot are not.
- Activation timing. Install before you fly, activate on landing. The activation guide covers the first-connection problems people hit and how to fix them.
The short version
MobiFone's monthly 4G packages are built for Vietnamese subscribers on a 30-day cycle. If that is you, buy them the normal way, in a store, with your registration documents. If you are a visitor, the same money buys a prepaid eSIM that works the moment you land and needs no paperwork at all.
For most readers arriving on this page, the answer is straightforward: skip the monthly package, buy the traveller plan, and spend the saved hour on something better than a phone shop.
FAQ
Can tourists buy a MobiFone monthly 4G package? Generally no, not in the resident form. Monthly packages assume a registered SIM and a 30-day cycle. Visitors normally buy prepaid tourist SIMs or an eSIM instead.
Is MobiFone better than Viettel or VinaPhone? They are all national carriers with broadly similar reach in cities. Coverage differences show up in rural and mountainous areas. Our network comparison sets out the differences.
How much data do I need for a two-week trip? Light use — maps, messaging, occasional browsing — sits comfortably under 10 GB. Add video streaming or hotspot use and you should size up. See the price guide for how allowances affect cost.
Can I use a Vietnam eSIM as a hotspot? Yes, where the plan allows it. Tethering rules and how much data it consumes are covered in our hotspot guide.
What if I lose my order email? There is no public order lookup page. Contact the help centre and they will sort it out.
Do I need a Vietnamese phone number? For most trips, no. Data is what you need. If you specifically need a local number for calls, read this guide first.
Sources
- VietSIM, Vietnam eSIM store — https://vietsim.com/en/vietnam-esim/ — retrieved 2026-10-05
- VietSIM, Vietnam eSIM activation guide — https://vietsim.com/en/vietnam-esim-activation/ — retrieved 2026-10-05
- VietSIM, Viettel, VinaPhone or MobiFone comparison — https://vietsim.com/en/viettel-vs-vinaphone-vs-mobifone/ — retrieved 2026-10-05
- VietSIM, Vietnam eSIM price guide — https://vietsim.com/en/vietnam-esim-price-guide/ — retrieved 2026-10-05