How Much Data Do I Need for Travel? A Plan for Every Trip Length
Your plan runs out on day five, in a train station, with your hotel booking inside an email you can no longer open. To work out how much data you need for travel, start with video, because it uses the most. For one week, 3 GB covers maps, ride apps, and messages. Add a daily video call home and you need 5 GB. Add a little streaming on mobile data and you need 10 GB.
Topping up is easy, but it takes a connection, and airport Wi-Fi does not always cooperate. So it pays to pick the right size before you leave. Below is the math for 3, 7, 10, 14, and 30 days, plus the phone settings that protect your plan from background apps.
In short:
- 1 GB covers about 5 hours of maps and taxi apps, or about 1.5 hours of video calls.
- One week: 3 GB for maps and messages, 5 GB with video calls, 10 GB with some streaming.
- Two weeks: 10 GB for most trips, 20 GB if you stream.
- Turn on Low Data Mode or Data Saver on the eSIM line. If you still run out, add data to the same eSIM.
What 1 GB actually covers
We use cautious numbers on purpose. They assume a good part of each gigabyte goes to things you never tapped: apps refreshing, photos backing up, and sync running in the background. You will often do better than this. It beats running short.
| Plan | Maps and taxi apps | Video calls |
|---|---|---|
| 1 GB | About 5 hours | About 1.5 hours |
| 3 GB | About 15 hours | About 4.5 hours |
| 5 GB | About 25 hours | About 7.5 hours |
| 10 GB | About 50 hours | About 15 hours |
| 20 GB | About 100 hours | About 30 hours |
Each row assumes the whole plan goes to that one thing. Real days are a mix, so the next section counts by day.
What really burns through a plan
Text messages barely register. Video is the heavy part, so these are the numbers to look at.
Streaming. Netflix publishes its limits per hour, per device:
| Netflix setting | Data per hour |
|---|---|
| Low | Up to 0.3 GB |
| Medium | Up to 0.7 GB |
| High, standard definition | Up to 1 GB |
| High, HD | Up to 3 GB |
| High, 4K | Up to 7 GB |
T-Mobile uses the same 3 GB per hour for HD in its own guide. At that rate, a two-hour movie uses more than a 5 GB plan holds. Low or Medium costs far less.
Video calls. Zoom recommends 600 kbps up and down for high-quality one-to-one calls, and 1.2 Mbps for 720p HD. Our math: at full rate, that is about 0.5 GB and 1 GB an hour, counting both directions. Our rule of about 1.5 hours per GB sits between the two. If you make long HD calls home, budget 1 GB per hour and go one plan size up.
Background sync. Apple lists automatic downloads, backups, and iCloud Photos updates among the things Low Data Mode limits. That tells you where the quiet data goes. A phone full of new vacation photos can spend gigabytes uploading them while it sits in your pocket.
How much data for 3, 7, 10, 14, and 30 days
Here are three typical days, built on the rules above:
- Maps and messages: an hour of maps and taxi apps, plus chats, comes to about 0.3 GB a day.
- With a video call: add 30 minutes of calling home. That is about 0.6 GB a day.
- With streaming: add 15 minutes of HD video. That is about 1.35 GB a day.
The table shows the plan to buy, with estimated use in parentheses:
| Trip | Maps and messages | With video calls | With streaming |
|---|---|---|---|
| 3 days | 1 GB (0.9 GB) | 3 GB (1.8 GB) | 5 GB (4 GB) |
| 7 days | 3 GB (2.1 GB) | 5 GB (4.2 GB) | 10 GB (9.5 GB) |
| 10 days | 5 GB (3 GB) | 10 GB (6 GB) | 20 GB (13.5 GB) |
| 14 days | 10 GB (4.2 GB) | 10 GB (8.4 GB) | 20 GB (18.9 GB) |
| 30 days | 10 GB (9 GB) | 20 GB (18 GB) | 20 GB plus a top-up (40.5 GB) |
Some of these look generous, and that is on purpose. For 3 days, 1 GB is tight, so take 3 GB if you will drive with maps open. On a 10-day trip, 3 GB would be used up to the last megabyte. On a two-week trip, a 5 GB plan leaves about 0.8 GB spare, or 4 hours of maps. One long driving day could use that. If you will mostly walk and use hotel Wi-Fi, 5 GB can work for two weeks.
A month of streaming on mobile data comes to about 40 GB. Save shows for hotel Wi-Fi, or download them at home.
What it costs
Moosetrip prices on 2026-10-30. The 1 GB plan lasts 7 days, and the others last 30.
| Destination | 1 GB | 3 GB | 5 GB | 10 GB | 20 GB |
|---|---|---|---|---|---|
| Italy | $3.50 | $7 | $9.50 | $15.50 | $28 |
| Japan | $4 | $7.50 | $10.50 | $17 | $28 |
| Turkey | $3.50 | $7 | $9.50 | $16 | $31.50 |
| Thailand | $5.50 | $9.50 | $13 | $19.50 | $30 |
| Europe, 35 countries | $3.50 | $7.50 | $10.50 | $20 | $36.50 |
So a week in Italy with maps and messages is $7. Two weeks in Japan with daily calls home is $17. A month in Thailand with calls is $30.
Stuck between two sizes? Take the bigger one. In Italy, a gigabyte costs about $2.33 on the 3 GB plan and $1.40 on the 20 GB plan. And if your US plan already includes enough data abroad, you may not need a travel eSIM at all. Apple suggests checking that first.
How to stop background apps from using your plan
Before you leave, on home Wi-Fi: update your phone and apps, and download offline maps of the places you will visit.
iPhone: Low Data Mode
Apple lets you set this per line. Go to Settings > Cellular, tap the eSIM line, and turn on Low Data Mode. On 5G you may find it under Cellular Data Options > Data Mode. Apple says it limits network use when you are not actively in an app, along with Background App Refresh, streaming quality, automatic downloads and backups, and updates for services such as iCloud Photos.
Android: Data Saver and a data limit
With Data Saver on, most apps send data in the background only on Wi-Fi, and open apps can still use mobile data.
- Pixel: Settings > Network & internet > Data Saver.
- Galaxy: Settings > Connections > Data usage > Data saver.
You can exempt an app that must keep running. On a Pixel you can also set a data limit in the SIM settings. The phone turns off mobile data when it reaches that limit. Google warns that your phone's count may differ from the carrier's, so set the limit a little below your plan, such as 4.5 GB on a 5 GB plan.
What to do if you run out of data
- Get on Wi-Fi at a hotel or cafe.
- See what used it. On an iPhone, the cellular settings show usage by app, including a separate roaming figure. On Android, look under Data usage for each SIM.
- Add data to the same eSIM. You don't need to reinstall anything.
- Don't switch data on for your US line as a quick fix. It can run up roaming charges. Our TravelPass comparison shows what Verizon charges.
Your phone's counter is only an estimate, so glance at it every couple of days and keep some in reserve.
Moosetrip eSIMs install at home over Wi-Fi with a QR code, and days count from your first connection in the country you are visiting. Your US number stays on as a second line. First, check that your phone supports eSIM.
Questions
Is 1 GB enough for a week abroad?
Only if you barely use it. An hour of maps a day, plus chats, comes to about 2 GB in a week, so take 3 GB. The 1 GB plan suits a long weekend.
How much data do I need for two weeks abroad?
Most people should take 10 GB. Maps and messages use about 4.2 GB, and a daily video call brings that to about 8.4 GB. With streaming on mobile data, take 20 GB.
How much data does a video call use?
Zoom's recommended rates work out to about 0.5 GB an hour for high-quality calls and about 1 GB an hour for 720p HD. Our rule of thumb is 1 GB for about 1.5 hours.
How much data does Netflix use on a phone?
Netflix lists up to 0.3 GB per hour on Low, up to 0.7 GB on Medium, and up to 3 GB in HD. Pick Low or Medium, or download at home.
Why doesn't my phone's count match the carrier's?
Your phone counts from its own logs. Google says carriers can measure differently, so treat the phone's number as a guide and leave a margin.
Sources
- How can I control how much data Netflix uses, Netflix Help Center, checked 2026-10-30
- Zoom system requirements and bandwidth, Zoom Support, checked 2026-10-30
- Streaming TV data usage, T-Mobile, checked 2026-10-30
- Use Low Data Mode on your iPhone and iPad, Apple, September 15, 2025, checked 2026-10-30
- Using eSIM on iPhone while traveling abroad, Apple, October 22, 2026, checked 2026-10-30
- Cellular data usage on iPhone and iPad, Apple, checked 2026-10-05
- Use Data Saver, Google Pixel Help, checked 2026-10-05
- Reduce and manage mobile data usage, Google Pixel Help, checked 2026-10-05