How much data do I need for a week abroad?

How much data do I need for a week abroad? Most travellers use around 3–7 GB a week. That covers maps, messaging, browsing, music and some social media every day, plus the occasional video call. Light users who rely on hotel Wi-Fi can manage with 1–3 GB. Daily video streaming or a laptop on your hotspot can push it past 15 GB.

What matters is what you do, not how long you stay. One hour of HD video can use as much data as a week of maps and messages, by Netflix's own figures. This guide shows what each app uses per hour, how to read your own phone's data counter, and a worked example for a week away. It ends with what to do if you run out.

How much data does each app use?

Video uses far more data than anything else. Netflix says up to 1 GB an hour in standard definition and up to 3 GB in HD. Music uses about 43 MB an hour at Spotify's Normal setting. Maps and messaging use very little.

Here are the figures from the companies themselves, where they publish them. We've converted bitrates into megabytes per hour; that conversion is our arithmetic.

Apps that don't publish figures

Most maps, messaging and social apps don't publish data figures, and real use varies a lot with settings. As a rough guide only:

• Messaging (texts, the odd photo and voice note): usually a few tens of MB a day.
• Maps and navigation: usually tens of MB an hour or less.
• Browsing and email: often around 20–60 MB an hour.
• Social media: often 100–300 MB an hour, and far more when feeds autoplay video.

The pattern matters more than the exact numbers. If something plays video, it uses hundreds of megabytes an hour or more. If it doesn't, you can usually stop worrying.

How much mobile data do you use at home?

Your own phone already knows. Its data counter shows how much mobile data you've used, usually per month or since you last reset it. That's the most useful starting point, because it reflects your apps and your habits, not an average.

For context, the average smartphone in North America and Western Europe used about 25 GB of mobile data a month in 2025, according to Ericsson's Mobility Report. The global average was about 22 GB. That's mobile data only; it doesn't count Wi-Fi.

Divide 25 GB a month by about 4.3 weeks and you get roughly 5.8 GB a week. That's our arithmetic, and it lands near the top of the typical travel range. It's a sanity check, not a target.

How to read your own counter

1. iPhone: Settings → Mobile Service (Cellular in the US). Scroll down to see data used by each app since the counter was last reset. The reset date is shown at the bottom.
2. Android: look under Settings → Network & internet (Samsung: Settings → Connections) for Data usage or App data usage. Most phones let you choose the date range.

Then turn the number into a weekly figure:

• Monthly figure ÷ 4.3 = your weekly use at home.
• Look at the top five apps. If video apps are near the top, you'll want a bigger plan or an Unlimited one.
• Adjust for the trip. You'll probably use more maps and fewer work apps. You may also have less Wi-Fi than at home, or more, if you're in hotels all day.

Why travel use can differ from home

At home, your phone spends much of the day on Wi-Fi, so a lot of heavy use never touches the mobile counter. Abroad, you're out more, so more of your day runs on mobile data. That's why a week away can use more mobile data than a normal week at home.

Which type of traveller are you?

Most people fit one of four patterns. Light travellers need around 1–3 GB a week and typical travellers 3–7 GB. Heavy users need 7–15 GB, and people who stream or work from a laptop need 15 GB or more, or an Unlimited plan. Find your closest match.

These ranges match the planning guide in our plan size help article. They're starting points. Your own counter, from the section above, beats any table.

A typical day of around 350–800 MB works out at about 2.5–5.6 GB a week. Add a small buffer for the unexpected, and 3–7 GB is a comfortable range.

Travelling as a family or a group

Each phone needs its own data, so size each person separately rather than buying one size for everyone. A teenager who lives on video apps may be a heavy user, while a parent who mostly checks maps and messages is a light one.

Tablets and kids' devices are the usual surprise. If a tablet will be connected to someone's hotspot for films on a long drive, that data counts against the host phone's plan. Download films on Wi-Fi before you set off, and the problem mostly goes away.

If the group stays together all day, one larger plan shared from one phone's hotspot can also work. It's less flexible when people split up, because only the person with the host phone stays online.

Suppose you're spending a week in Japan: a worked example

Here's a hypothetical typical traveller, priced line by line. Where a company publishes a figure, we use it. Where it doesn't, we use the rough ranges above.

Seven days at about 440 MB is about 3.1 GB. Add 20% for things you don't plan, like a long train ride with a video, and you get about 3.7 GB. A 5 GB plan covers that with room to spare. These are our calculations from the figures above.

Now add one HD episode a night

Suppose you also watch a 45-minute episode in HD each evening, on mobile data rather than hotel Wi-Fi. At Netflix's figure of up to 3 GB an hour, that's up to about 2.25 GB a night.

That's up to 15.75 GB extra across the week, enough to take you from a 5 GB plan to needing 20 GB or more. One habit changes the answer more than everything else combined. Download episodes on hotel Wi-Fi instead, and the extra data drops to almost nothing.

What does 1 GB, 3 GB, 5 GB or 10 GB actually get you?

A gigabyte goes a long way with music and messaging, and not far with video. One gigabyte is about 23 hours of Spotify at Normal quality, but only about one hour of Netflix in standard definition. Here's what each common plan size buys if you spent it all on one thing.

These are our own calculations, using 1 GB = 1,000 MB and the per-hour figures above. Real use mixes all three, but the table shows where your data really goes.

Rules of thumb by plan size

• 1 GB: messaging, maps and email for a short trip, with Wi-Fi for anything else.
• 3 GB: a light-to-typical week, if you keep video to Wi-Fi.
• 5 GB: a typical week, with some social media and short video calls.
• 10 GB or more: heavy social media, daily video calls, or two weeks of typical use.
• Unlimited: daily streaming, hotspot work, or not wanting to think about it.

Why does a phone use more data abroad than you expect?

Mostly because of what it does in the background. Photo backups, app updates and apps refreshing themselves can use more than your actual browsing. Your first day or two also tends to be heavier, while you're finding your way and sending "we've arrived" photos.

The usual background culprits:

• Photo and video backups. iCloud Photos or Google Photos can upload every picture at full size.
• App and system updates. One big update can use more than a day of normal travel use.
• Background App Refresh. Apps fetch new content while you aren't using them.
• Autoplay video in social and news feeds.
• Offline map downloads started away from Wi-Fi.
• A laptop on your hotspot. It behaves as if it's on home broadband.

Carriers know this too. Verizon's roaming terms say background data such as app refreshes, email syncing and software updates counts as use. Telstra says the same about its day passes. On a travel eSIM, the same background data simply comes out of your plan.

How do you make your data last?

Turn on Low Data Mode or Data Saver, move backups and updates to Wi-Fi, and download maps and shows before you go out. These steps stop most background use. Do them at home, before you fly.

1. Turn on Low Data Mode (iPhone). Settings → Mobile Service → tap your travel line → Data Mode → Low Data Mode. On a dual-SIM iPhone, you set it per line. Apple says it pauses Background App Refresh, automatic downloads and backups, and iCloud Photos updates.
2. Turn on Data Saver (Android). Settings → Network & internet → Data Saver. On Samsung: Settings → Connections → Data usage → Data saver.
3. Set photo backups to Wi-Fi only. Check iCloud Photos and Google Photos settings, and any other backup app.
4. Turn off app auto-updates on mobile data. In the App Store or Google Play settings.
5. Download offline maps on Wi-Fi. Google Maps lets you save an area. According to Google, offline maps cover driving directions, but not walking, cycling or transit directions.
6. Download music and episodes on Wi-Fi. Spotify, Netflix and most streaming apps can save content to your phone.
7. Lower streaming quality on mobile data. Spotify lets you set a separate quality for mobile data and Wi-Fi.
8. Turn off autoplay in social apps.
9. Switch off mobile data for apps you won't need. On iPhone, scroll down in Settings → Mobile Service and turn off individual apps.
10. Check your usage on day two. That's when you'll see whether your estimate was right, with time to top up.

For the same settings phone by phone, see how to save data.

Does using your phone as a hotspot use more data?

Yes, often much more. A laptop or tablet connected to your phone behaves as if it's on home broadband. It syncs files, downloads updates and backs up in the background, and all of it comes out of your plan.

If you'll work from a laptop, plan for at least the "Streaming or working" row above. Before you tether:

• Pause cloud sync (iCloud Drive, OneDrive, Dropbox, Google Drive).
• Pause system and app updates on the laptop.
• Set the laptop to treat the connection as metered, if it offers that.
• Close video tabs you're not watching.

On kimsim, hotspot use counts toward the daily full-speed allowance on Unlimited and Day Pass plans, just like phone use. We can't confirm hotspot on every network, so test it on day one with a little data, not on the morning of an important call. Using your phone as a hotspot.

Should you choose a fixed plan or Unlimited?

Choose a fixed plan if your use is light or typical and fairly predictable. Choose Unlimited if you stream video daily, work from a hotspot, or don't want to watch a counter. The difference is how the data runs out.

Fixed data plans give you a set amount, such as 5 GB, for a set number of days. When it's gone, mobile data stops until you top up.

Unlimited plans at kimsim give you a daily allowance at full speed. After that you stay connected at 1 Mbps until the next day starts. Plans that drop lower, such as 384 or 512 Kbps, are called Day Pass, and the after-cap speed is shown before you pay. How Unlimited and Day Pass work.

What the after-cap speed means in data

A connection running flat out at 1 Mbps moves at most about 450 MB an hour. At 512 Kbps it's about 230 MB an hour, and at 384 Kbps about 170 MB an hour. That's our arithmetic, not a network measurement, and real speeds are often lower.

Compare those with the app table above. At 1 Mbps, Spotify Normal at 96 kbit/s plays fine, but HD video at up to 3 GB an hour won't.

What happens if you run out of data?

On a fixed plan, mobile data stops until you add more. With kimsim, you top up onto the same eSIM from My eSIMs, so there's no new QR code and nothing to reinstall. On Unlimited and Day Pass plans, you never run out; you slow down until the next day.

How it works with kimsim:

1. Watch for the warning. We email you when your data is nearly gone or your plan is about to end.
2. Check what's left in My eSIMs. The network reports usage every two to three hours, so the figure can lag. How usage updates.
3. Top up on your eSIM in My eSIMs, pick a pack and pay. The data is added to the same eSIM shortly after. Top up your eSIM.

A few plans can't be topped up, and expired eSIMs can't either. In that case, buy a new eSIM for the destination. A top-up can't be refunded once it's been added.

Common mistakes when choosing a data plan

Sizing by trip length, not by habits. A week of messages and maps needs far less than a weekend of streaming. Start from what you do.

Forgetting background jobs. Photo backups and app updates can use gigabytes in a day. Turn on Low Data Mode or Data Saver before you fly.

Streaming on mobile data when Wi-Fi is free. Download shows and playlists on hotel Wi-Fi instead.

Buying the biggest plan "just in case". Most travellers use less than they fear. You can top up later onto the same eSIM.

Buying the smallest plan and not checking. Check your usage on day two. If you're on track to run out, top up early.

Sizing a whole family by one person's habits. Each phone uses data differently. Size each one by its owner's habits.

Tethering a laptop without pausing sync. Cloud drives and updates can eat a plan in an afternoon.

Expecting full speed after an Unlimited cap. At 1 Mbps you can do messages, maps and music, but not HD video.

Picking the wrong plan and installing it anyway. Pick carefully before you buy: refunds are only for an eSIM that can't be made to work, not for choosing a different plan (the refund rule). If you run short, top up the same eSIM instead.

How we put this guide together

We used figures that the companies publish themselves: Netflix's data-use guide, Spotify's audio bitrates, Zoom's bandwidth guide and Apple's Low Data Mode guide, all checked on 1 November 2026. Average usage comes from Ericsson's Mobility Report, June 2026 edition. Offline maps limits come from Google Maps Help. Where no company publishes a figure, such as for maps or social apps, we've given rough ranges and labelled them that way. The conversions, the worked example and the plan-size table are our own arithmetic.

Facts about kimsim plans, top-ups and usage reports come from our help centre. kimsim sells travel eSIMs, so we have an interest in what plan you buy. That's why this guide suggests starting small and topping up if you're unsure.

Still deciding between an eSIM, roaming, a local SIM or pocket Wi-Fi? See how they compare on cost, or start with what an eSIM is. Your phone needs to support eSIM and be unlocked: check it here.