HKBU UChat v2.2

APK · 63.8 MB · version code 220070400 · Android 4.1+ · uploaded Aug 27, 2023

53def3b07cfbe38fa9c77afd0d6e9275 TRUSTED

  • Same certificate as v2.2.3, which matches Google Play 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 v2.2.3, uploaded May 18, 2026 — about 2 years after this one.

  • Size: this file is 63.8 MB; the latest is 60.3 MB (3.6 MB smaller).
  • Android: this version needs Android 4.1+; the latest needs Android 4.4+. Use this one if your device runs an older Android release.
  • The latest version asks for 7 more permissions: Foreground service camera, Foreground service data sync, Foreground service phone call, Foreground service remote messaging, Manage own calls, Advertising ID, Internal broadcast protection (app-defined).

File information

Version
v2.2 (220070400)
Uploaded
Aug 27, 2023
Size
63.8 MB
Requires
Android 4.1+ (API 16)
CPU support
x86 32-bit, x86 64-bit, ARM (legacy), ARM 32-bit, ARM 64-bit, MIPS, MIPS 64-bit
Graphics
OpenGL ES 2.0+
Screen
Small screens and larger
MD5
53def3b07cfbe38fa9c77afd0d6e9275
Signing certificate (SHA-1)
4C:DD:28:F1:CF:23:A3:39:5E:EB:B5:5D:82:2D:32:EC:A6:13:8F:53
Signed by
CN=ITO - UCU, OU=ITO, O=HKBU, L=KOWLOON TONG, C=HK
File name
hk-edu-hkbu-ito-uchat-220070400-65751401-53def3b07cfbe38fa9c77afd0d6e9275.apk
Package
hk.edu.hkbu.ito.UChat
Downloads (all versions)
1K+
Age rating
PEGI 3 · Everyone

What's new in v2.2

- Support Android 13 - Bug fixing

Permissions (56)

This version requests 56 permissions, 14 of them sensitive.

Security & authenticity

Security rating: Trusted

Signing certificate

  • Certificate issued to “HKBU” This is the certificate of the Google Play version.
  • Same certificate as v2.2.3, which matches Google Play v2.2.3

Store checks

  • Developer signature verified Aug 27, 2023
  • 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 (1 other version compared). AAPKs doesn't scan files itself.

How to install HKBU UChat on Android 4.1+

You'll need about 127.7 MB of free space.

  1. Download the APK — tap Download APK above (63.8 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
  2. Open the file — tap the download notification, or open Files › Downloads and tap hk-edu-hkbu-ito-uchat-220070400-65751401-53def3b07cfbe38fa9c77afd0d6e9275.apk.
  3. 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.
  4. Check the file (optional) — the MD5 of the downloaded file should be 53def3b07cfbe38fa9c77afd0d6e9275. If it differs, the file is damaged or was changed: delete it and download again.
  5. 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).
  6. Open HKBU UChat — 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 4.1+). 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 (legacy), ARM 32-bit, ARM 64-bit, MIPS, MIPS 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.

Other versions (2)

v2.2.3 LATEST May 18, 2026 60.3 MB TRUSTED v2.2 THIS FILE Aug 27, 2023 63.8 MB TRUSTED

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