Mobile Key v3.3.4
APK · 13.7 MB · version code 12119 · Android 8.0+ · uploaded Nov 4, 2025
- 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 — about 10 days after this one.
- Size: this file is 13.7 MB; the latest is 43.5 MB (29.8 MB larger).
- Android: this version needs Android 8.0+; the latest needs Android 10+. Use this one if your device runs an older Android release.
- The latest version asks for 7 more permissions: Access adservices ad id, Access adservices attribution, Foreground service connected device, Read basic phone state, Receive push notifications, Read Google service settings, Transfer use transfer service (custom).
- The latest version no longer asks for: Request ignore battery optimizations.
File information
- Version
- v3.3.4 (12119)
- Uploaded
- Nov 4, 2025
- Size
- 13.7 MB
- Requires
- Android 8.0+ (API 26)
- CPU support
- x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
- Screen
- Small screens and larger
- MD5
- 1e52f90d34e7b8ed6f7d95cdec5cb5ac
- 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-12119-72137168-1e52f90d34e7b8ed6f7d95cdec5cb5ac.apk
- Package
- cz.quanti.helios_nfc
- Downloads (all versions)
- 100K+
- Age rating
- PEGI 3 · Everyone
What's new in v3.3.4
Improvements
- Improve NFC behavior when changing operation mode on some devices
- Add more detailed description of error states when opening door
- Improved performance of Bluetooth pairing
Bug fixes
- Prevent Bluetooth connections becoming unexpectedly stuck
Permissions (16)
This version requests 16 permissions, 2 of them sensitive.
- Bluetooth connect Sensitive android.permission.BLUETOOTH_CONNECT
- Bluetooth scan Sensitive android.permission.BLUETOOTH_SCAN
- Advertising ID com.google.android.gms.permission.AD_ID
- Control vibration android.permission.VIBRATE
- 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
- 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
- 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 Nov 4, 2025.
- 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 Nov 4, 2025
- Validated against Google Play Nov 4, 2025
- 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 8.0+
You'll need about 27.3 MB of free space.
- Download the APK — tap Download APK above (13.7 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-12119-72137168-1e52f90d34e7b8ed6f7d95cdec5cb5ac.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 1e52f90d34e7b8ed6f7d95cdec5cb5ac. 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 8.0+). 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.