Your ideal data allowance for a trip to Vietnam depends on how you use your phone, how long you stay and how often you can connect to Wi-Fi.Video streaming, video calls and hotspot sharing can use significantly more data than maps, ride-hailing and messaging.
This guide breaks down what is the ideal data allowance for a trip to Vietnam, helping you estimate your usage and choose a Vietnam eSIM without paying for more data than you need.
What Is the Ideal Data Allowance for a Trip to Vietnam?
For most travelers, 1GB of mobile data per day is enough for maps, Grab, messaging and light social media use, as long as video streaming and photo backups happen over Wi-Fi.
Allow 2–3GB per day for more flexibility, or 5GB or more if you regularly stream videos, make long video calls or use your phone as a laptop hotspot.
If you are still not sure how much you need, the table below compares typical daily usage with a suggested data allowance.
How you use mobile data | Estimated daily use | Suggested allowance |
|---|---|---|
| Light: maps, Grab, messaging and email | Under 0.5GB | Small daily plan or total-data plan |
| Typical: the above plus social media and short video calls | Around 1GB | 2GB/day, or 3GB for extra headroom |
| Heavy: regular video streaming, long video calls or uploading clips | Around 3GB or more | 5GB/day or more, depending on usage |
| Sharing a hotspot with another phone | Depends on both users | Choose an allowance that covers combined usage |
| Working on a laptop through your phone’s hotspot | Highly variable | Choose a large plan that permits hotspot use |
These estimates assume you have Wi-Fi where you sleep and use it for streaming, photo backups and app updates. If you do these activities over mobile data instead, your daily usage can increase substantially.
Practical Tip: Estimate your usual activities first, then allow extra data for busy travel days when you may rely on mobile connectivity for navigation, bookings and communication.
How much data do common travel apps use?
Data usage varies by app and settings. As a rough guide, one hour of HD Netflix streaming can use up to 3GB, a Zoom video call around 0.5–1.1GB, Spotify about 40–150MB, and a WhatsApp voice call roughly 18–30MB. Maps, Grab bookings and text messages generally use much less data than video.
The table below shows approximate data usage for common travel apps. Figures come from official provider guidance where available and third-party estimates where exact figures are not published.
| Activity | Approximate data | Where the figure comes from |
| Netflix | Up to 0.3GB an hour on Low, 0.7GB on Medium, 3GB in HD. The “Save Data” mobile setting gives about 6 hours per GB | Netflix Help Center (official) |
| YouTube | No official per-hour figure; lower quality uses much less | YouTube only lists recommended connection speeds: 5 Mbps for 1080p, 1.1 Mbps for 480p |
| Zoom one-to-one video call | About 0.5 to 1.1GB an hour, counting upload and download; real calls vary | Estimate based on Zoom’s bandwidth figures of 600 kbps to 1.2 Mbps each way |
| Google Meet audio-only call | About 90MB an hour | Estimate based on Google’s figure of 100 kbps each way for individuals and small teams |
| Spotify | About 43MB an hour on Normal, about 144MB on Very high | Estimate based on the approximate bitrates in Spotify’s audio quality settings |
| TikTok and other short-video feeds | Varies widely; one test measured about 320MB in an hour of TikTok | Rough estimate from a single test |
| WhatsApp voice call | Roughly 0.3 to 0.5MB a minute | Rough estimate from third-party guides; WhatsApp does not publish a figure |
| Google Maps navigation, Grab bookings, text messages | Much less than video | No official figure; use varies with how much map you load |
Video is usually the biggest factor in your data usage. Lowering video quality and turning off automatic photo and video backups can help your data last longer.
If you use WhatsApp to keep in touch with home, our guide to keeping WhatsApp active on a travel eSIM covers the setup. For ride-hailing, see how Grab, Xanh SM and Be work in Vietnam. And if you are thinking of using your home plan instead, this roaming guide shows what common activities cost on roaming.
How much data do you need for 1 week, 2 weeks or 1 month in Vietnam?
As a rough guide, plan for 7GB for one week, 14GB for two weeks or 30GB for a month. These estimates assume you use around 1GB per day and are totals for your entire trip.
Keep in mind that these figures are total data for your trip. If you choose a daily plan, check its data allowance per day instead.
| Trip length | Light (about 0.5GB a day) | Typical (about 1GB a day) | Heavy (about 3GB a day) |
| 7 days | About 3.5GB | About 7GB | About 21GB |
| 14 days | About 7GB | About 14GB | About 42GB |
| 30 days | About 15GB | About 30GB | About 90GB |
You may need less if you often use Wi-Fi, or more if you spend long periods streaming or making video calls. For a total-data plan, estimate your usage across the whole trip and leave some room for busy days. For a daily plan, check the allowance available each day.
Should you choose a daily plan, a total-data plan or an unlimited plan?
Choose a daily plan for a separate data allowance each day, a total-data plan for flexibility across your trip, or an unlimited plan for frequent data-heavy use. Remember to check the speed limits and hotspot rules before buying.
- Daily data plans: Useful if you want a predictable allowance that resets each day. Check what happens when you reach the daily limit.
- Total-data plans: Better if your usage varies between days, as you can use more data on busy days and less on quiet ones.
- Unlimited plans: Worth considering if you stream videos or make frequent video calls. Some plans reduce speeds after a high-speed data threshold, and hotspot access may be restricted.
For example, Vietnamesim.com’s Local eSIM offers a 7-day option with 15GB of total data, while its Vietnam Unlimited eSIM does not support hotspot use. Check the current product terms before purchasing.
Which Vietnamesim.com plan fits your usage?
Choose your plan based on your expected daily usage, trip length and whether you need hotspot access.
| Your usage | Plan type to consider | Example on vietnamesim.com (at the time of writing) |
| Light, or a trip of a week or less | Total-data plan with room to spare | Local eSIM, 15GB for 7 days, from $5.90 |
| Typical | 2 to 3GB a day | MobiFone eSIM, 3GB a day for 7 days, from $7.90 |
| Heavy, or sharing a hotspot | 5 to 8GB a day, hotspot allowed | Viettel eSIM, 5GB a day, from $10.90; Vietnam Data-Only eSIM, 5 to 7GB a day; MobiFone eSIM, up to 8GB a day |
| Frequent streaming without hotspot use | Unlimited | Vietnam Unlimited eSIM, from $6.90 for 3 days |
Prices and plan options change, so check the product page before you buy. Whether a plan includes a Vietnamese phone number does not change how much data you need. If you are unsure about a local number, see do you need a Vietnamese phone number.
How can you make your data last longer in Vietnam?
You can reduce mobile data use with a few simple changes, especially when you’re out sightseeing or travelling between destinations.
1. Turn on Low Data Mode or Data Saver
Enable Low Data Mode on iPhone or Data Saver on Android to reduce background data use.
- On iPhone, go to Settings > Cellular > Cellular Data Options and turn on Low Data Mode.
- On Android: go to Settings > Network & internet > turn on Data Saver. Menu names vary by phone maker.
2. Back up photos over Wi-Fi
Pause photo and video backups over mobile data in iCloud Photos or Google Photos, then upload them when you’re connected to Wi-Fi.
3. Lower video quality
Use lower video quality on YouTube and Netflix when streaming over mobile data. Download shows over Wi-Fi when possible.
4. Download maps and music in advance
Save your destination in Google Maps and download music or playlists over Wi-Fi. Offline maps have limited features, including no live traffic updates.
5. Stop automatic media downloads in chat apps
Set WhatsApp to download photos and videos only over Wi-Fi to avoid using data on media you don’t need.
6. Turn off your hotspot when you’re not using it
Laptops and other connected devices can use mobile data for background updates even when you’re not actively browsing.
7. Check which apps use the most
On iPhone, Settings > Cellular shows data use for each app, and you can switch off mobile data for any app you don’t need on the go.
Frequently Asked Questions
Is 1GB a day enough in Vietnam?
Yes, 1GB a day is usually enough if you use mobile data for maps, Grab, messaging, email and some social media, and do your streaming and photo backups on Wi-Fi. It is not enough for daily video streaming or long video calls on mobile data. On a daily plan, choose 2 to 3GB to cover busier days.
Is 10GB enough for two weeks in Vietnam?
10GB can be enough for a light user over two weeks, working out to about 0.7GB per day. You will need to rely on Wi-Fi for heavy activities such as streaming and photo backups. If you regularly browse social media or make video calls, around 14GB provides a more useful starting estimate, although actual usage varies.
Does 5G use more data than 4G in Vietnam?
No. For the same content and quality, 5G does not inherently use more data than 4G. However, faster connections can allow video apps to play at higher quality when automatic settings are enabled, which may increase data consumption. Setting a fixed, lower video quality on mobile networks can help keep usage predictable.