Mobile Key v3.4.3
APK · 43.5 MB · version code 14640 · Android 10+ · uploaded Jul 11, 2026
- Signature matches the Google Play version Details
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v3.5.0, uploaded Nov 15, 2025.
- Size: this file is 43.5 MB; the latest is 43.5 MB (29.6 KB smaller).
- The latest version no longer asks for: Request ignore battery optimizations.
File information
- Version
- v3.4.3 (14640)
- Uploaded
- Jul 11, 2026
- Size
- 43.5 MB
- Requires
- Android 10+ (API 29)
- CPU support
- x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
- Screen
- Small screens and larger
- MD5
- e51b93ce18bb3a5c3a36b05ca3ba9cef
- Signing certificate (SHA-1)
- B3:6F:01:7D:60:48:6D:02:19:77:49:F1:AE:85:12:30:D5:48:2E:C0
- Signed by
- CN=Unknown, OU=Unknown, O=2N TELEKOMUNIKACE a.s., L=Prague, ST=Unknown, C=CZ
- File name
- cz-quanti-helios-nfc-14640-75617919-e51b93ce18bb3a5c3a36b05ca3ba9cef.apk
- Package
- cz.quanti.helios_nfc
- Downloads (all versions)
- 100K+
- Age rating
- PEGI 3 · Everyone
What's new in v3.4.3
This version brings you the option to transfer your Mobile Key data into the new My2N app. The transferring will be happening gradually so wait until the app will notify you. We also did some bugfixing.
Permissions (23)
This version requests 23 permissions, 2 of them sensitive.
- Bluetooth connect Sensitive android.permission.BLUETOOTH_CONNECT
- Bluetooth scan Sensitive android.permission.BLUETOOTH_SCAN
- Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
- Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
- Advertising ID com.google.android.gms.permission.AD_ID
- Control vibration android.permission.VIBRATE
- Foreground service connected device android.permission.FOREGROUND_SERVICE_CONNECTED_DEVICE
- Full network access android.permission.INTERNET
- Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- Internal broadcast protection (app-defined) cz.quanti.helios_nfc.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Nfc android.permission.NFC
- Oppo oppo component safe (custom) oppo.permission.OPPO_COMPONENT_SAFE
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Read Google service settings com.google.android.providers.gsf.permission.READ_GSERVICES
- Read basic phone state android.permission.READ_BASIC_PHONE_STATE
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- Request ignore battery optimizations android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- Run foreground services android.permission.FOREGROUND_SERVICE
- Show notifications android.permission.POST_NOTIFICATIONS
- Transfer use transfer service (custom) cz.quanti.android.mk.transfer.permission.USE_TRANSFER_SERVICE
- Use component (custom) com.huawei.permission.external_app_settings.USE_COMPONENT
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Jul 11, 2026.
- Certificate issued to “2N TELEKOMUNIKACE a.s.” This is the certificate of the Google Play version.
- Same certificate as the 4 other versions checked
Store checks
- Developer signature verified Jul 11, 2026
- Validated against Google Play Jul 11, 2026
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (4 other versions compared). AAPKs doesn't scan files itself.
How to install Mobile Key on Android 10+
You'll need about 87 MB of free space.
- Download the APK — tap Download APK above (43.5 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap cz-quanti-helios-nfc-14640-75617919-e51b93ce18bb3a5c3a36b05ca3ba9cef.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be e51b93ce18bb3a5c3a36b05ca3ba9cef. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open Mobile Key — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 10+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit only. Devices with other processors can't install it.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.