Package
com.sec.android.app.factorykeystring
DeviceKeystring
42device profiles
63observations
0user-facing hits
2 Jun 2026last seen
Package intelligence
Observed signing, permission, version and size signals from contributing devices - descriptive of that sample, not a verdict. These come from the v2 Package Search sync, which not every device has contributed to yet, so for some packages this detail is partial or not present at all.
2
signing certs
OEM-forked / varies
49
permissions
largest set observed
5.7 MB – 14.1 MB
APK size
31 – 36
target SDK
12 → 1.1.17
versions observed
14
device profiles
- Signed by the device maker's own signing key (Samsung), so it is an OEM preinstall, but 2 different certificates appear across the fleet, so OEMs ship their own builds of it.
- Its largest observed manifest declares 49 permissions: 8 runtime (user-granted), 15 signature or system-level, 9 install-time and 17 vendor or uncatalogued.
- APK size ranges from 5.7 MB to 14.1 MB across the reporting device profiles, so the build differs substantially between them.
- Never reported as user-facing, so it runs as a background or system component rather than an app the user opens.
Declared permissions (49)
Largest permission set observed for this package. Text is Android's own published description where one exists; platform permissions Android does not document show their granted protection level (in grey) instead; vendor or unknown constants show the name only.
| Permission | Description |
|---|---|
android.Manifest.permission.USE_IRIS |
- |
ACCESS_CHECKIN_PROPERTIES |
Signature or privileged system permission. |
ACCESS_COARSE_LOCATION |
This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location. |
ACCESS_FINE_LOCATION |
This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage. |
ACCESS_NETWORK_STATE |
Allows the app to view information about network connections such as which networks exist and are connected. |
ACCESS_WIFI_STATE |
Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices. |
BLUETOOTH |
Allows the app to view the configuration of the Bluetooth on the phone, and to make and accept connections with paired devices. |
BLUETOOTH_CONNECT |
Allows the app to connect to paired Bluetooth devices |
BLUETOOTH_SCAN |
Allows the app to discover and pair nearby Bluetooth devices |
CALL_PHONE |
Allows the app to call phone numbers without your intervention. This may result in unexpected charges or calls. Note that this doesn't allow the app to call emergency numbers. Malicious apps may cost you money by making calls without your confirmation, or dial carrier codes which cause incoming calls to be automatically forwarded to another number. |
CAMERA |
This app can take pictures and record videos using the camera while the app is in use. |
CHANGE_CONFIGURATION |
Signature or privileged system permission. |
CHANGE_NETWORK_STATE |
Allows the app to change the state of network connectivity. |
CHANGE_WIFI_STATE |
Allows the app to connect to and disconnect from Wi-Fi access points and to make changes to device configuration for Wi-Fi networks. |
CLEAR_APP_USER_DATA |
Signature-level system permission, for platform-signed apps. |
DEVICE_POWER |
Signature-level system permission, for platform-signed apps. |
HARDWARE_TEST |
Signature-level system permission, for platform-signed apps. |
MANAGE_EXTERNAL_STORAGE |
Signature-level system permission, for platform-signed apps. docs ↗ |
MODIFY_AUDIO_SETTINGS |
Allows the app to modify global audio settings such as volume and which speaker is used for output. |
MODIFY_PHONE_STATE |
Signature or privileged system permission. |
MOUNT_UNMOUNT_FILESYSTEMS |
Signature or privileged system permission. |
READ_PHONE_STATE |
Allows the app to access the phone features of the device. This permission allows the app to determine the phone number and device IDs, whether a call is active, and the remote number connected by a call. |
REBOOT |
Signature or privileged system permission. |
RECEIVE_BOOT_COMPLETED |
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running. |
RECORD_AUDIO |
This app can record audio using the microphone while the app is in use. |
SCHEDULE_EXACT_ALARM |
This app can schedule work to happen at a desired time in the future. This also means that the app can run when you\u2019re not actively using the device. |
UPDATE_DEVICE_STATS |
Signature or privileged system permission. |
VIBRATE |
Allows the app to control the vibrator. |
WAKE_LOCK |
Allows the app to prevent the phone from going to sleep. |
WRITE_APN_SETTINGS |
Signature or privileged system permission. docs ↗ |
WRITE_MEDIA_STORAGE |
Signature or privileged system permission. |
WRITE_OWNER_DATA |
- |
WRITE_SECURE_SETTINGS |
Signature or privileged system permission. |
WRITE_SETTINGS |
Allows the app to modify the system's settings data. Malicious apps may corrupt your system's configuration. |
sec.BARCODE_READ |
- |
com.android.launcher.permission.INSTALL_SHORTCUT |
- |
com.android.launcher.permission.UNINSTALL_SHORTCUT |
- |
com.samsung.accessory.manager.permission.AUTHENTICATION_CONTROL |
- |
com.samsung.android.knox.permission.KNOX_CUSTOM_SYSTEM |
- |
com.samsung.android.permisson.PEN_INSERT |
- |
com.sec.android.app.DataCreate.permission.KEYSTRING |
- |
com.sec.android.app.factorymode.permission.KEYSTRING |
- |
com.sec.android.app.phoneutil.permission.KEYSTRING |
- |
com.sec.android.app.selftestmode.permission.KEYSTRING |
- |
com.sec.android.app.servicemodeapp.permission.KEYSTRING |
- |
com.sec.factory.permission.KEYSTRING |
- |
com.sec.modem.settings.permission.KEYSTRING |
- |
com.sec.permission.preconfig |
- |
com.sec.testingsettings.permission.KEYSTRING |
- |
Manage on devices
ADB commands for this package (the inverse of each is included so you can undo). Run from an authorised shell or wire the equivalent into your DPC. Verify on a test device first - this database doesn’t yet classify which packages are safe to change. --user 0 targets the current user; drop it (and use a privileged shell) to act device-wide.
Disable for the current user
adb shell pm disable-user --user 0 com.sec.android.app.factorykeystring
Remove for the current user - a per-user uninstall; the APK stays on
/system, so Restore re-adds it (-k keeps app data)adb shell pm uninstall -k --user 0 com.sec.android.app.factorykeystring
Re-enable
adb shell pm enable com.sec.android.app.factorykeystring
Restore (re-install for the current user)
adb shell pm install-existing com.sec.android.app.factorykeystring
Seen on
Each record is a device profile (make + model + Android version). Each unique handset that syncs against a matching profile will increase the observations of a package, thereby increasing confidence that a package is expected to be on a device.
| OEM | Model | Android | Provenance | Observations | Last seen |
|---|---|---|---|---|---|
| Samsung | SM-A125F | Android 12 | OEM Samsung | 1 | 21 Jan 2026 |
| Samsung | SM-A135F | Android 14 | OEM Samsung | 3 | 21 Jan 2026 |
| Samsung | SM-A137F | Android 14 | - | 1 | 17 Jan 2026 |
| Samsung | SM-A236B | Android 14 | OEM Samsung | 2 | 10 Apr 2026 |
| Samsung | SM-A266B | Android 15 | - | 2 | 21 Aug 2025 |
| Samsung | SM-A266B | Android 16 | - | 1 | 26 Jan 2026 |
| Samsung | SM-A346B | Android 14 | OEM Samsung | 1 | 4 Mar 2026 |
| Samsung | SM-A515F | Android 13 | - | 1 | 30 Jun 2025 |
| Samsung | SM-A528B | Android 13 | - | 1 | 19 Jun 2025 |
| Samsung | SM-A536B | Android 15 | - | 1 | 19 Jun 2025 |
| Samsung | SM-A556B | Android 15 | - | 1 | 1 Jul 2025 |
| Samsung | SM-A566B | Android 16 | - | 2 | 4 Nov 2025 |
| Samsung | SM-F721B | Android 15 | - | 1 | 9 Jul 2025 |
| Samsung | SM-F766B | Android 16 | - | 1 | 11 Nov 2025 |
| Samsung | SM-G766B | Android 15 | - | 1 | 17 Oct 2025 |
| Samsung | SM-G780F | Android 13 | OEM Samsung | 1 | 29 Dec 2025 |
| Samsung | SM-G973U | Android 12 | OEM Samsung | 2 | 28 May 2026 |
| Samsung | SM-G991B | Android 15 | OEM Samsung | 1 | 19 Apr 2026 |
| Samsung | SM-M315F | Android 12 | - | 1 | 2 Feb 2026 |
| Samsung | SM-N950U1 | Android 9.0 | - | 1 | 20 Aug 2025 |
| Samsung | SM-N986B | Android 13 | - | 9 | 17 Jul 2025 |
| Samsung | SM-S721U | Android 15 | - | 5 | 5 Aug 2025 |
| Samsung | SM-S906B | Android 15 | - | 1 | 2 Jun 2025 |
| Samsung | SM-S908U | Android 16 | OEM Samsung | 1 | 2 Jun 2026 |
| Samsung | SM-S921B | Android 15 | OEM Samsung | 2 | 22 Jul 2025 |
| Samsung | SM-S921B | Android 16 | OEM Samsung | 1 | 13 May 2026 |
| Samsung | SM-S921U | Android 15 | - | 1 | 19 Jun 2025 |
| Samsung | SM-S926B | Android 16 | OEM Samsung | 1 | 14 Apr 2026 |
| Samsung | SM-S928B | Android 16 | OEM Samsung | 1 | 25 Jan 2026 |
| Samsung | SM-S928U1 | Android 15 | - | 1 | 12 Sep 2025 |
| Samsung | SM-S931B | Android 15 | - | 1 | 20 Sep 2025 |
| Samsung | SM-S931B | Android 16 | - | 1 | 23 Nov 2025 |
| Samsung | SM-S936B | Android 16 | - | 1 | 18 Dec 2025 |
| Samsung | SM-S937B | Android 15 | - | 1 | 25 Aug 2025 |
| Samsung | SM-S938B | Android 15 | - | 2 | 25 Aug 2025 |
| Samsung | SM-S942B | Android 17 | OEM Samsung | 1 | 25 May 2026 |
| Samsung | SM-T636B | Android 15 | - | 2 | 12 Oct 2025 |
| Samsung | SM-T976B | Android 13 | - | 1 | 21 Jul 2025 |
| Samsung | SM-X200 | Android 14 | - | 1 | 27 Aug 2025 |
| Samsung | SM-X716B | Android 15 | - | 1 | 27 Jun 2025 |
| Samsung | SM-X910 | Android 14 | - | 1 | 26 Jun 2025 |
| Samsung | SM-X910 | Android 15 | - | 1 | 12 Sep 2025 |
Known labels
Locale-aware display names seen in the wild.
| Label | Locale | Seen |
|---|---|---|
| DeviceKeystring | en-gb | 21 |
| DeviceKeystring | en-us | 16 |
| DeviceKeystring | en | 7 |
| DeviceKeystring | nl-nl | 5 |
| DeviceKeystring | it-IT | 5 |
| DeviceKeystring | en-nl | 3 |
| DeviceKeystring | es-us | 3 |
| DeviceKeystring | de-de | 3 |
| DeviceKeystring | 2 | |
| DeviceKeystring | en-GB | 2 |
| DeviceKeystring | es-ES | 2 |
| DeviceKeystring | es-es | 2 |
| DeviceKeystring | fr-fr | 2 |
| DeviceKeystring | it-it | 2 |
| DeviceKeystring | fr-dz | 1 |
| DeviceKeystring | pl-pl | 1 |
| DeviceKeystring | en-au | 1 |
| DeviceKeystring | ru-ru | 1 |
| DeviceKeystring | en-US | 1 |
| DeviceKeystring | pl-PL | 1 |
| DeviceKeystring | es-US | 1 |
| DeviceKeystring | fr-FR | 1 |