JW Library v12.2.1
APK · 52.1 MB · version code 83990 · Android 5.0+ · uploaded Dec 7, 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 v15.9.2, uploaded Oct 2, 2026 — about 10 months after this one.
- Size: this file is 52.1 MB; the latest is 78 MB (25.9 MB larger).
- Android: this version needs Android 5.0+; the latest needs Android 8.0+. Use this one if your device runs an older Android release.
- The latest version asks for 3 more permissions: Foreground service media playback, Read media audio, Internal broadcast protection (app-defined).
- The latest version no longer asks for: Receive push notifications, Push messaging (app-defined).
File information
- Version
- v12.2.1 (83990)
- Uploaded
- Dec 7, 2025
- Size
- 52.1 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- ARM 64-bit
- Graphics
- OpenGL ES 2.0+
- Screen
- Small screens and larger
- MD5
- f05371704cff449b24ee37860d6622bf
- Signing certificate (SHA-1)
- 4B:C9:3D:51:8F:C5:4C:D3:D7:3E:74:A4:EB:37:6A:4F:8F:0D:B3:A7
- Signed by
- CN=Christopher Nelson, OU=MEPS, O=Jehovah's Witnesses, L=Patterson, ST=NY, C=US
- File name
- org-jw-jwlibrary-mobile-83990-72698146-f05371704cff449b24ee37860d6622bf.apk
- Package
- org.jw.jwlibrary.mobile
- Downloads (all versions)
- 50M+
- Age rating
- PEGI 3 · Everyone
What's new in v12.2.1
Fixed several bugs, including some that were causing the app to crash
Game data (OBB)
This app needs extra data files (140 MB) next to the APK. Their download links appear once the download is unlocked.
- Main OBB
- main.146.org.jw.jwlibrary.mobile.obb (140 MB)
- Main OBB MD5
- 943a2bfdef40085afaddb776602e7a59
Permissions (8)
This version requests 8 permissions, 1 of them sensitive.
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Full network access android.permission.INTERNET
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Push messaging (app-defined) org.jw.jwlibrary.mobile.permission.C2D_MESSAGE
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- Run foreground services android.permission.FOREGROUND_SERVICE
- View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
- 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 Dec 7, 2025.
- Certificate issued to “Jehovah's Witnesses” This is the certificate of the Google Play version.
- Same certificate as the 6 other versions checked
Store checks
- Developer signature verified Dec 7, 2025
- Validated against Google Play Dec 7, 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 (6 other versions compared). AAPKs doesn't scan files itself.
How to install JW Library on Android 5.0+
You'll need about 244.2 MB of free space (the APK plus 140 MB of game data).
- Download the APK — tap Download APK above (52.1 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 org-jw-jwlibrary-mobile-83990-72698146-f05371704cff449b24ee37860d6622bf.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 f05371704cff449b24ee37860d6622bf. 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).
- Copy the game data — before the first launch, move the OBB file (140 MB), without renaming or unzipping, into Android/obb/org.jw.jwlibrary.mobile/. On Android 11 and later many file managers can't open that folder; use the built-in Files app or copy it from a computer over USB.
- Open JW Library — 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 5.0+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for 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.