Mobile data packages run out fast, especially with video apps and automatic updates running in the background. Android has built-in tools that show exactly which apps use your data and let you set warnings and limits. This guide explains how to track your usage, find the apps responsible and cut your data use without missing anything important.
Key takeaways
- See usage per app in Settings > Network & internet (Connections on Samsung).
- Set a data warning and data limit that match your package.
- Turn on Data Saver to limit background data.
- Set app updates and photo backup to Wi-Fi only.
What this guide covers
- Check your mobile data usage
- Set a warning and a limit
- Use Data Saver
- The biggest data users and how to tame them
- Quick data-saving checklist
- FAQs
Check your mobile data usage
Open Settings > Network & internet > SIMs (or Mobile network) and tap App data usage. On Samsung phones go to Settings > Connections > Data usage > Mobile data usage. You will see a chart for the current cycle and a list of apps ordered by the data they used.
Tip: Set the billing cycle start date to the day your package renews. The numbers then match what your mobile network counts.
Set a warning and a limit
- In the data usage settings, open Data warning & limit (or Billing cycle).
- Turn on Set data warning and enter an amount, for example 80% of your package.
- Turn on Set data limit to stop mobile data automatically when you reach it.
Your phone’s count can differ slightly from your network’s count, so leave a small margin.
Use Data Saver
Data Saver stops most apps from using data in the background, and apps you open may use less data, for example by loading images only when you tap them. You can allow important apps, such as messaging, to keep using background data. Find it under Network & internet > Data Saver or in Quick Settings.
The biggest data users and how to tame them
| Activity | Approx. data use | How to reduce it |
|---|---|---|
| HD video streaming | About 1–3 GB per hour | Choose lower quality on mobile data |
| Short-video apps | High, videos autoplay | Turn on the app’s data saver option |
| Video calls | Several hundred MB per hour | Use Wi-Fi for long calls |
| Music streaming | Around 40–150 MB per hour | Download playlists on Wi-Fi |
| App updates | Can be hundreds of MB | Play Store: auto-update over Wi-Fi only |
| Photo backup | Depends on photos | Back up over Wi-Fi only |
Most video and music apps have their own “data saver” or “mobile data quality” setting. Setting these once makes the biggest difference. Our guide on updating apps on Android shows how to set Play Store updates to Wi-Fi only.
Quick data-saving checklist
- Set billing cycle, warning and limit.
- Turn on Data Saver.
- Play Store auto-update: Wi-Fi only.
- Google Photos backup: Wi-Fi only.
- Messaging apps: stop auto-downloading videos on mobile data.
- Download maps, music and videos on Wi-Fi before travelling.
- Turn off Wi-Fi Assist / “Switch to mobile data” if your phone has it.
FAQs
Why is my data finishing so fast?
Usually video apps, background updates or backups. Check App data usage to see which app is responsible.
Does Data Saver stop WhatsApp messages?
It can delay background data. Add messaging apps to the unrestricted list so messages arrive on time.
Does using Wi-Fi count towards my mobile data?
No. Wi-Fi usage is counted separately and does not use your mobile package.
Sources: Android Help. Menu names can differ slightly between phone brands and Android versions.