How Much Mobile Data Do You Need for Travel? Maps, Taxis and Staying in Touch

Key takeaways

• Plan for 3–5 GB per person for a one-week trip if you use maps, taxi apps and messaging, and watch videos over Wi-Fi.

• For two weeks, allow 5–10 GB with the same habits.

• Social media, video calls and hotspot use increase data consumption. Your phone’s own usage stats are the best guide here.

• Automatic photo uploads can use up your allowance while your phone is still in your pocket.

• Downloaded maps reduce data use, but they do not replace online public transport directions or taxi apps.

You need internet access as soon as you land: to message home, find your hotel’s address and book a ride. Then you spend the day checking maps, translating menus and looking up museum opening hours. Your phone seems to be downloading something all the time. How much data will that use in a week: 3 GB, 10 GB or a full 20 GB?

For maps, taxi apps and messaging, 3–5 GB for a week is a good starting point. That assumes you have Wi-Fi where you are staying and will not be using mobile data for TV shows, long video calls or endless scrolling through videos.

The rest depends on how you spend your days. One person looks for the nearest coffee shop while another sends friends a video from their walk. Both have their phones out for five minutes, but their data use is very different.

How much data to get for 3, 7 or 14 days

The table below gives estimates for one person using one phone. These are planning allowances, rather than precise measurements of individual apps.

These allowances do not include daily video streaming or tethering a laptop.

Some travelers report using around 3–5 GB over two weeks for navigation, messages and looking things up. Others use 20 GB over the same period with videos and video calls. Those figures describe individual trips; there is no single standard amount that every traveler uses.

If you spend most of your day on Wi-Fi at home, your usual mobile data stats may underestimate what you will need abroad. On vacation, all those daytime searches, messages and photos will come out of your travel data allowance.

How much data do maps use?

You open directions to a restaurant, look at photos of the entrance and read the reviews. The restaurant is closed. You start looking for another one, load a menu and open Street View for the next street.

All of that counts toward your maps app’s data use, alongside navigation. A single figure for “megabytes per hour of directions” will not tell you how much data to buy for your trip.

Offline maps cut out some of those downloads. Before leaving home, you can use Wi-Fi to download the area around your hotel, the city center and any nearby places you plan to visit.

But without an internet connection, Google Maps does not provide walking, cycling or public transport directions. Driving navigation works within the downloaded area, without traffic information or alternative routes. Map downloads are unavailable in some countries.

You will still need mobile data for getting around by metro and bus. The same goes for finding an open pharmacy in the evening when your plans have changed.

Keep screenshots of your accommodation address, door code and check-in instructions too. You will be able to open them even in an underpass with no signal.

Is a small data plan enough for taxi apps?

A few taxi bookings a day are included in the basic estimates in the table. There is no need to buy a large data plan just for that.

Running out before your return flight, though, can leave you stuck. Your driver has arrived at the next exit and is messaging you, but the app has stopped loading.

You will need some data left on the last day to book a ride, check your terminal and open your ticket. It is easier to top up while your connection is still working.

Before you fly, you can sign in to your taxi app and add a payment method. If signing in calls for an SMS code, it will go to the number linked to your account. A data-only travel eSIM does not give you access to that number.

Text messages use very little data. What else happens in your chats?

Text messages usually account for only a small part of your allowance. But the same messaging app also handles the photos you send, videos arriving in group chats and calls with the camera on.

Sending five photos over the course of a day uses a different amount of data from sharing several long videos from a tour. Sending original files also uses more data than sharing compressed photos.

With a small allowance, you can save photo uploads and long calls for the evening Wi-Fi. During the day, stick to messages, voice notes and short voice calls.

If you want to show your family around the city on a video call every day, an allowance intended for maps and messaging will be tight. Your own usage stats can help: check how much data a similar call uses at home.

Group chats are another source of downloads. Your phone may automatically download videos people send, even if you never watch them. In your messaging app’s settings, you can limit automatic video downloads to Wi-Fi.

Why does your data run out while your phone is in your pocket?

You take a few dozen photos and a couple of videos during a walk. Your phone starts uploading them to the cloud over mobile data. The screen goes dark, but the upload continues.

Travelers describe using up their allowances in a few days because of automatic backups. In one account, a traveler said that his wife’s phone had used 30 GB this way. Those figures cannot be checked against the provider’s records, but the cause gives you something specific to check before your trip.

Before flying, you can turn off mobile data use for:

• Photo and video uploads to the cloud.

• Backups.

• App and system updates.

• Automatic file downloads in chats.

• Video autoplay in social feeds.

You can also download music, podcasts and episodes at home. That way, they will not eat into the data you need for maps and messages.

Sharing one data plan between two people: how much do you need?

If another person connects to your hotspot, their downloads come out of your allowance too. While you are checking directions, they might be browsing social media or sending a video.

For two people who need maps, messaging and help finding places, you can double the initial estimate. But there is another limitation: as soon as you split up, only the person with the eSIM keeps their connection.

One of you goes into a shop while the other sits down at a café. To send “I’m done, where are you?”, you will each need internet access.

Data use varies even more with a laptop. Email and documents use one amount; video meetings and syncing work folders use quite another. Once connected to your hotspot, a laptop can start downloads you had forgotten about.

Whether tethering is allowed depends on the eSIM plan. You will find that information in the plan’s terms.

How to tell after the first day whether you have enough data

After your first full day out, open your mobile data usage settings and check which apps are at the top of the list.

Say you used 400 MB in a day. Seven similar days would use around 2.8 GB. Add a buffer of around 30%, and that comes to about 3.6 GB. In this example, a 5 GB plan covers the week.

If 2 GB disappeared in a day, the app list will show where it went. Social media, video calls and cloud photo uploads call for different fixes: spending less time scrolling, saving calls for Wi-Fi or turning off syncing.

Your arrival day is less useful for this calculation. You spend several hours on the plane, then connect to airport Wi-Fi and make your way to your accommodation. A full day in the city gives you a figure closer to the rest of your trip.

If your provider shows your remaining allowance in your account, check that too. Your phone’s counter and the provider’s records can differ.

How to choose a travel eSIM for your trip

The Revosim travel eSIM catalog includes plans for individual countries and regions. For a week of maps, taxi apps and messages, start with 3–5 GB. For two weeks with social media, look at plans with 10 GB or more. Available data allowances vary by destination.

Alongside the data allowance, every plan has a validity period. A seven-day plan will not cover a ten-day vacation, even if you still have data left.

If your trip takes you through several countries, a regional plan needs to cover every stop. If you will be working on a laptop, check that the plan supports a personal hotspot.

After payment, Revosim provides a QR code and setup instructions. You can install the eSIM profile in advance over Wi-Fi. Activation and the start of the validity period depend on the plan you choose. Your phone must support eSIM; regular calls, SMS and a phone number are not included in every plan.

If you have never tracked your data use before, 5 GB for a one-week trip with Wi-Fi at your accommodation gives you a starting point. After a couple of days, you will see how much you actually use. When you get home, save those stats alongside your hotel notes and tickets. Next time, you will have a real number to work from.