399 apps APK — Complete Information and Install Guide for the Android App
399 apps' official Android app is available as an APK. On this page you will learn what an APK is, how to install it safely, how to keep it updated, and how to fix common problems.
What is an APK and how to get the official app from 399 apps
APK stands for Android Package Kit — the file format used to install apps on Android phones. When an app is installed directly outside the Google Play Store, this APK file is what gets used. 399 apps distributes its Android app the same way — through its official channel.
Many popular betting and casino platforms work this way, because Google Play Store policies do not allow real-money gaming apps to be listed there directly. 399 apps makes its app available through that official channel, so the process is straightforward and reliable.
iOS users also have a separate 399 apps app, available through the official channel. For details, visit the 399 apps App page.
Step-by-step install guide
Installing the 399 apps APK on an Android phone is very simple — follow the six steps below.
Get the APK from the official channel
Download the APK file only from 399 apps' official channel. Do not use files obtained from any other source.
Allow unknown sources
Go to your phone's Settings and enable the option to install from unknown sources. If Android prompts you, select "Allow".
Open the APK file
Open your phone's file manager or Downloads folder and tap the APK file. An install prompt will appear.
Confirm the install
Tap the "Install" button. Wait a moment — your phone will complete the installation on its own.
Open the app
Once installation is done, the 399 apps icon will appear on your home screen or app drawer. Tap it to launch the app.
Log in
Log in with your 399 apps account username and password, then start betting and gaming.
How to update the app
399 apps updates its app regularly — to add new games, improve the interface, and apply security patches. There is no automatic update feature, so keeping the app updated manually is important.
When a new version is available, get the new APK file from the official channel. You can install the new APK directly without uninstalling the old app — your phone will replace the old version with the new one. Your account details and gaming history will not be lost.
After installing the update, open the app and log in again. For details on the login process, visit the 399 apps Login page.
Keeping the app up to date reduces the chances of slow page loads, sudden crashes, and payment issues. An updated app performs better especially during major tournaments like IPL and T20 World Cup when betting traffic is high.
Common install problems and solutions
Three problems come up most often when installing an APK. Know the cause and fix for each.
Low storage
If the install stalls, first check your phone's storage. Free up space by deleting unnecessary photos, videos, or old apps. Once there is enough storage, the install will proceed normally.
Install blocked
Android blocks apps from unknown sources for security on the first attempt. Go to Settings → Security → Unknown Sources and enable it, or grant permission specifically to your file manager app — then try again.
App won't open
If the app does not open after installation, restart your phone. If that does not fix it, uninstall the app, get a fresh APK from the official channel, and install it again.
Stay safe — official APK only
The biggest risk with APKs is fake or modified files. Some dishonest people spread fake APKs in the name of 399 apps — these are actually malware or tools to steal your information. Follow the rules below and you will stay completely safe:
- Only get the APK from 399 apps' official channel — not from any other source.
- Never use APK links sent via Telegram groups or personal messages — these are often scams.
- Avoid APK files shared on Facebook pages or posts — many fake apps are spread through unofficial pages.
- Do not install any APK obtained from an unfamiliar or suspicious link.
- Never share your account password with anyone, and keep the app locked after logging in.
Start playing on 399 apps
After installing the app, open an account and get a 200% bonus on your first deposit — up to ৳8,000, with a wagering requirement of 20 times the bonus amount. The minimum deposit is just ৳500. Deposit via bKash, Nagad, Rocket, or bank transfer and withdraw within 30 minutes to 3 hours. Join the 399 apps VIP programme to also receive weekly cashback.
