Android Data Saver for travel: the settings to change on Pixel and Samsung

Android gives you more control over mobile data than most people use. Six switches, set once before a trip, stop the background traffic that quietly empties a travel plan.

By eSIM Data Deals editorial deskPublished 7 November 2026Updated 7 November 20265 min read

Short answer

Before you travel, turn on Data Saver (Pixel: Settings → Network & internet → Data Saver; Samsung: Connections → Data usage → Data saver), allow only the apps you need, set Play Store updates to Wi-Fi only, turn off background data for heavy apps, and make the travel eSIM the only data line with automatic data switching off.

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Key figures6 switches

Pixel Data Saver: Network & internet → Data Saver
Samsung Data saver: Connections → Data usage
Exempt an app: "Unrestricted data" (Pixel)
Play Store: auto-update over Wi-Fi only
Pixel dual SIM: Automatic data switching: off
Check usage: SIMs → App data usage

On this page

Which six Android settings matter for travel?

Menu names change between Android versions and makers. Pixel paths follow Google's Pixel help pages; Samsung paths are typical for recent One UI versions.
Setting	Pixel path	Samsung path (One UI)
1. Data Saver	Settings → Network & internet → Data Saver	Settings → Connections → Data usage → Data saver
2. Apps allowed with Data Saver on	Data Saver → Unrestricted data	Data saver → Allowed to use data while Data saver on
3. Background data per app	App data usage → the app → Background data	Data usage → Mobile data usage → the app → Allow background data usage
4. Play Store auto-updates	Play Store → profile → Settings → Network preferences → Auto-update apps → Over Wi-Fi only	Same in the Play Store; Galaxy Store has its own setting
5. Which SIM carries data	Network & internet → SIMs → Mobile data	Connections → SIM manager → Mobile data
6. Automatic data switching	Network & internet → SIMs → Automatic data switching: off	SIM manager → the data switching option: off

What does Data Saver change?

Data Saver stops apps from using mobile data in the background unless you have exempted them. The app on screen can still load what you ask for. That is exactly the split you want on a travel plan: the map you are looking at loads; the photo backup, the podcast app's auto-downloads and the shopping app's refresh wait for Wi-Fi.

The trade-off is that some apps update less often in the background. So the second step matters as much as the first: give Unrestricted data (Pixel) or Allowed to use data while Data saver on (Samsung) to the few apps that must stay live, usually your main messaging app, your ride-hailing app on travel days, and any work app that must push alerts.

Our recommended order. Paths for each step are in the table above.

Which apps should lose background data?

Look at the phone's own list before you go: Settings → Network & internet → SIMs → App data usage on a Pixel shows which apps used most in the last period. The usual suspects for background use are:

Photo and file backup (Google Photos, OneDrive, Dropbox): set them to back up on Wi-Fi only inside the app as well.
Podcast and video apps with automatic downloads.
Social apps that preload videos for your feed.
Shopping, news and email apps that refresh in the background.

Turning off background data for an app doesn't uninstall or break it. When you open it, it loads what you look at.

Why turn off automatic data switching?

On a dual-SIM Pixel, Google's help describes Automatic data switching as a setting you can turn on in Network & internet → SIMs; it lets the phone use the other SIM for data in some situations. On a trip, the other SIM is usually your home line, where data abroad may be charged as roaming. Turn switching off and make the travel eSIM the only data line. Samsung phones have a similar data switching option in SIM manager. Our home SIM guide covers the whole set-up, including data roaming on the home line.

What about settings inside the apps?

The phone controls when apps may use data; the apps decide how much they use when they do. Four in-app settings are worth a minute each:

YouTube and Netflix: lower the mobile video quality or turn on the data-saving option in the app's settings.
Spotify: choose a lower streaming quality for mobile data, and download playlists on Wi-Fi.
WhatsApp: set media auto-download for mobile data and roaming to no media.
Google Maps and Google Translate: download offline maps and languages on Wi-Fi. Google says downloaded areas work offline and downloaded languages translate without a connection.

How do I check the settings are working?

After the first day abroad, open SIMs → App data usage for the travel line and look at the top five apps. If something you didn't use in the foreground is near the top, turn off its background data or fix its in-app setting. The data warning guide shows how to get an alert before you reach the plan size.

Anything specific to Samsung?

Samsung phones add a few switches of their own. In the Wi-Fi settings, an Intelligent Wi-Fi menu can include an option to switch to mobile data when Wi-Fi is weak; turn it off if you want hotel Wi-Fi to stay Wi-Fi. Samsung's Mobile data only apps list in Data usage lets chosen apps use mobile data even when Wi-Fi is on; check it is empty. Menu names vary with One UI versions, so search the Settings app for the words if you can't find them.

How much can these settings save?

Google and Samsung don't publish a saving, because it depends on what your phone would otherwise do. The useful way to think about it: the settings don't shrink what you do on purpose, they remove what you didn't ask for. An app update batch, a photo backup of the day's pictures, or a podcast app pre-loading episodes can each use hundreds of megabytes. With the six settings in place, those wait for Wi-Fi, and the plan pays only for what you look at. Use the calculator for what you look at.

Should I undo the settings after the trip?

Undo the ones that only make sense abroad. Switch Data Saver off if you prefer apps to refresh freely at home, put automatic data switching back the way you had it, and let backups and updates run once you are on home Wi-Fi again. Keep the in-app quality settings if you liked them; they save data on any plan.

Frequently asked questions

What does Android Data Saver do?

It stops most apps from using mobile data in the background. Apps you are using can still use data, and you can let chosen apps keep background access while Data Saver is on.

Will Data Saver stop my messages arriving?

It can delay background updates for apps that are not exempt. Mark your main messaging app as unrestricted so messages keep arriving on time.

Is Data Saver per SIM?

Data Saver is a phone-wide switch on most Android phones, while usage, warnings and limits are shown per SIM. Check your phone's menus, as makers differ.

Does Data Saver affect the hotspot?

Android may limit or turn off hotspot sharing while Data Saver is on, depending on the phone. If you need the hotspot, check it with Data Saver on before you rely on it.

Next step

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Written and checked by the eSIM Data Deals editorial desk

We take data figures from the app makers' own help pages where they publish one, convert published bitrates with kbit/s × 0.45 = MB per hour, and label every planning assumption. We don't run paid reviews or publish prices. Editorial policy · How we get our figures · Who owns this site

Sources and how we checked

Figures were read from these pages on 7 November 2026. Apps change their settings and rates; if a number here disagrees with the app on your phone, trust your phone's own data counter. See how we get our figures.