Protects you from accidental roaming on your mobile data connection
About this app
Roaming Guard protects you from accidental roaming connections by monitoring your mobile network operator. The app compares your current operator against a customizable MCC/MNC allowlist or denylist. When your phone connects to an unwanted operator, you can choose to either receive a warning notification or — with some limitations — automatically block data traffic. Roaming Guard includes a predefined EU/EEA allowlist, and you can easily create your own custom list that perfectly matches your mobile plan.
Regular Android apps cannot completely block data traffic or even disable data roaming. Therefore, this app implements a local, on-device VPN service that drops all traffic routed through the VPN when enabled. However, this approach has the following technical limitations: - Android only supports one active VPN at a time, meaning conflicts may arise if you use another VPN app. - Tethering and mobile hotspot traffic is not routed through the VPN by Android and therefore cannot be blocked. - System apps that can explicitly select their network connection may bypass the VPN. - DNS and NTP traffic have been reported to leak outside the VPN. - There might be short time windows after boot, or when enabling the VPN, where traffic might not be filtered.
Licensed under GPL-3.0-only, by Markus Petermann.
What's New in v1.1.1
Imported from the F-Droid repository index.
- - Update MCC/MNC data.
Version history
May 6, 2026 · 2.9 MB · Android API 34–36 · code 6
Imported from the F-Droid repository index.
- - Update MCC/MNC data.
SHA-256 b747ed214a32a646195bae0c9e70f2007b850b6516269bd094b1575331225a98
Apr 26, 2026 · 2.9 MB · Android API 34–36 · code 5
Imported from the F-Droid repository index.
- - Add connection logging.
SHA-256 678a77ef2cf98d41b755d9be6ddec2b4ca70f32b35c257a7a61392ab3a64c5e7
Apr 9, 2026 · 2.8 MB · Android API 34–36 · code 4
Imported from the F-Droid repository index.
SHA-256 07051670564126efb39873faf64724338133ee0f516a82d5fd2ea74c554158fa
Will it run on your device?
74%
- Targets newer Android builds, so legacy devices may be excluded.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be net.markuspetermann.roamingguard is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.1.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Roaming Guard first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Roaming Guard, and a listing is removed when the evidence for it stops holding up.
Get Roaming Guard
Every source we list for net.markuspetermann.roamingguard is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
b747ed214a32a646195bae0c9e70f2007b850b6516269bd094b1575331225a98
Signing certificate
82fe0a86fe1abca0a8e0e1dfe9b32c7daa9c6f87669cf0b4f4bf2eee3cd69a41
Permissions Required
What each permission lets Roaming Guard do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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