Complete guide to installing the bj99 casino and betting app on Android using the APK file
bj99's official Android app is available as an APK file. This page explains every step of installation, updates, and safe use in plain English.
Android Package File — what APK means
APK stands for Android Package Kit. It is essentially a package file that contains all the components of an app — code, images, and resources — compressed together. When you download an app from the Google Play Store, your phone processes the APK in the background automatically; you do not need to do anything separately.
However, many online platforms — particularly gaming and betting sites — distribute APK files directly outside the Play Store. This method is called "sideloading". The bj99 Android app is also available this way through official channels. Before downloading the app, you need to enable a specific setting on your Android phone, which is explained in detail in the installation guide section.
bj99 also has a separate app for iOS users, available through official channels. This page focuses mainly on the Android APK. For more information about the app, you can visit the bj99 App page.
The complete process for installing the bj99 APK
Follow the steps below to install the bj99 app on any Android phone. Read each step carefully.
Allow installation from unknown sources
Go to your phone's Settings. Under the "Security" or "Biometrics and Security" menu, enable the option "Allow installation of apps from unknown sources". On newer Android versions, you may need to enable this separately for a specific browser or file manager.
Get the APK from the official channel
Download the APK file through bj99's official channel. The file will be saved to your phone's "Downloads" folder. Do not download the file from any other source.
Open the file manager and launch the APK
Open your phone's file manager or "My Files" app. Go to the Downloads folder, find the bj99 APK file, and tap on it.
Tap "Install" on Android's install permission prompt
Your phone will ask whether you want to install an app from this source. Tap the "Install" button. Installation finishes within a few seconds to one minute.
Open the app and log in
Once installation is complete, the bj99 icon will appear on your home screen. Tap the icon to open the app. Then bj99 login with your username and password and start playing.
Register if you have a new account
If you are using it for the first time, select the "Create a new account" option. Complete registration by entering your mobile number and password. After registering, you will be eligible for the welcome bonus.
How to update the bj99 APK
Because the app does not come through the Play Store, it does not update automatically. Follow the steps below to get a new version:
- Check bj99's official channel for notices about new APK updates. A notification is sent when an update is available.
- Download the new APK file from the official channel to your device.
- You do not need to uninstall the old app — installing the new APK will automatically replace the previous version (the option "Update" will appear during installation).
- Once installation is complete, log in with your existing account details — your data will remain unchanged.
- Keeping the app regularly updated gives you access to new games, bonus offers, and security improvements.
Common problems during installation and how to fix them
Some Android phones may encounter issues during installation. Below are the most commonly seen problems and their solutions.
Not enough storage space
If your phone is low on space, installation will stop midway. Free up enough space by removing old apps, cache files, or unnecessary photos from Settings, then try again.
Installation is being blocked
If you see the message "Not allowed to install from this source", go to Settings and enable unknown sources for the specific browser or file manager you are using. On Samsung phones, this is found under the "Special app access" menu.
App is not launching after installation
If the app is installed but will not open, restart your phone. If it still does not open, uninstall and reinstall the app. Also check that your phone's internet connection is working.
Error while updating
If you have trouble installing the new APK over the old version, uninstall the previous one first, then install the new one. Save your login details beforehand so you can sign back in easily.
Only use the official APK — security tips
APK files from unreliable sources can contain malware or viruses. Follow the points below to stay safe:
Do not download APK files from these sources
Telegram groups or channels: Many fake Telegram channels spread counterfeit APKs in bj99's name. These may contain malware that can steal your banking information.
Facebook posts or messages: Downloading APK files from links shared on Facebook is highly risky. These files are not official.
Unknown websites or links: You should not download the bj99 APK from any third-party website or a link received via SMS.
Join the bj99 app, claim your bonus
After registering, a 200% bonus is available on your first deposit, up to a maximum of ৳15,000. The bonus amount can be withdrawn after meeting a 25x wagering requirement. For example: depositing ৳1,000 gives you a ৳2,000 bonus, making your total balance ৳3,000, with a wagering requirement of ৳50,000.
bKash, Nagad, Rocket, and Upay are accepted for deposits and withdrawals. The minimum deposit is just ৳100. Withdrawal funds generally arrive within 5–30 minutes. You can also join the VIP program to receive weekly cashback benefits — see the bj99 VIP page for details.
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