Can I block data on SIM 1 but allow it on SIM 2?

Yes. Inside Restrict data usage each SIM has its own toggle, so you can turn off Mobile data (SIM 1) while leaving Mobile data (SIM 2) active, or the other way around.

Why do notifications stop after restricting data for an app?

Some apps only fetch new content over mobile data while running in the background. If push notifications rely on that connection, blocking mobile data through Restrict data usage can delay them until the app is opened on Wi-Fi.

Is it safe to restrict data usage for system apps?

It is possible, but system apps often use mobile data for updates or account sync. Restricting them under Manage apps can cause missed updates or sync errors, so it is safer to leave core system apps unrestricted.

How do I undo the data restriction later?

Return to Tap on Settings ➔ Tap on Apps ➔ Tap on Manage apps ➔ Choose an app ➔ Tap on Restrict data usage and turn the Mobile data toggle back on for the SIM you need, then confirm with OK.

Xiaomi

Xiaomi: Restrict Mobile Data Usage for a Specific App

If a Xiaomi phone burns through your data plan even though you barely open certain apps, background data access is usually the cause. By default every installed app can use mobile data and Wi-Fi without restriction. On dual-SIM phones this applies separately to each SIM slot, which makes it harder to spot which line is actually consuming the data.

Updated: 07.08.20265 min6 steps

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Xiaomi

Restrict Mobile Data Usage for an App auf Xiaomi

Mobile data restrictions on Xiaomi phones are managed per app through MIUI system settings, not through the app itself. Every app gets background data access by default, so apps you rarely open can still sync, refresh, or push notifications over mobile data without you noticing.

This matters most on limited data plans or when roaming, since background traffic from social media, cloud backup, or messaging apps adds up quickly. On dual-SIM devices the setting is split by SIM slot, so an app can be allowed to use data on one SIM and blocked on the other.

To restrict data usage for a specific app, go to Tap on Settings ➔ Tap on Apps ➔ Tap on Manage apps ➔ Choose an app ➔ Tap on Restrict data usage. From there, Turn On/Off Mobile data (SIM 1 / 2) and confirm with OK.

Turning the toggle off blocks that app from using mobile data on the selected SIM entirely, while Wi-Fi access stays untouched unless you restrict it separately. If notifications stop arriving after this change, the app likely relies on mobile data to fetch updates while running in the background.

Frequently asked questions

No. The Restrict data usage option only controls mobile data. Wi-Fi access keeps working unless you disable it separately for that app.

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Android 11 · MIUI

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Xiaomi: Restrict Mobile Data Usage for a Specific App

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