Universal Book Reader Full Key v1.1
APK · 259.2 KB · version code 2 · Android 2.3+ · uploaded Aug 5, 2014
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
File information
- Version
- v1.1 (2)
- Uploaded
- Aug 5, 2014
- Size
- 259.2 KB
- Requires
- Android 2.3+ (API 9)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- fc9d21859deba9dac5d05eadd98b15cb
- Signing certificate (SHA-1)
- 39:24:E1:05:9F:20:B3:1D:87:2E:5A:54:59:5B:C8:C6:11:A3:E2:B8
- Signed by
- CN=Nikolay Kussovski, OU=Mobile Systems, O="Mobile Systems, Inc.", L=San Diego, ST=California, C=US
- File name
- com-mobisystems-ubreader-key-2-6531749-fc9d21859deba9dac5d05eadd98b15cb.apk
- Package
- com.mobisystems.ubreader.key
- Downloads (all versions)
- 31.6K
- Age rating
- PEGI 3 · Everyone
What's new in v1.1
Version 3.0.458
* Optimized for 4.4 OS version
* SD card bug fixed
Version 3.0.411
* UB Store removed from the application.
* Log in no longer required for UB Reader.
* Ability to locally protect a book with a password.
* Ability to edit a book’s name, author and cover in the Book info dialog.
* Ability to use vibration on text selection in ePub books.
* Import of the default books.
Permissions (1)
This version requests 1 permission, none of them sensitive.
- Change component enabled state android.permission.CHANGE_COMPONENT_ENABLED_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Certificate issued to “Mobile Systems, Inc.” Not the developer's name (“Mobile Systems, Inc.”). Names in certificates can't be verified, so this alone proves nothing.
Store checks
- Developer signature under review Mar 10, 2025
- Antivirus scan passed Aug 23, 2020
- Tested by the source store's staff May 7, 2020
- Uploaded by “vegasrome” Silver tier · 19,947 followers · uploading since 2012
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself.
How to install Universal Book Reader Full Key on Android 2.3+
You'll need about 518.3 KB of free space.
- Download the APK — tap Download APK above (259.2 KB). 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 com-mobisystems-ubreader-key-2-6531749-fc9d21859deba9dac5d05eadd98b15cb.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 fc9d21859deba9dac5d05eadd98b15cb. 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 Universal Book Reader Full 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 2.3+). Download it again, or pick an older version.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.