Casino, slots, fish games, and Sports Betting — all in one app. Enjoy the full 3999vi experience from anywhere, at any time.
Safe · Virus-Free · Free
Android, iOS, or browser — the same great experience on any device
Download the APK file directly and install it. You can be up and running in under 5 minutes. This is the most widely used method in Bangladesh.
IPhone and iPad users can visit the 3999vi website in Safari and add it to the home screen for an app-like experience.
You can play 3999vi directly in your browser without downloading any app. Just visit the site using Chrome, Firefox, or any modern browser and get started.
Complete installation in just 5 easy steps
First, create an account on 3999vi or log in to your existing one. An account is required to access the download link.
Tap the Android APK button on the download page. The file will be saved automatically to your phone's Downloads folder.
Go to Settings → Security → Unknown Sources and turn it on. You only need to do this once. The APK will not install without this option enabled.
Tap the downloaded APK file. When prompted for installation permission, tap "Install". The installation will complete within seconds.
Once installation is complete, open the app, log in to your account, and start enjoying all the games on 3999vi.
After installation, turn "Unknown Sources" back off — it's a good habit that keeps your phone secure.
Our native app delivers a better experience than any browser
The app is optimized for mobile, so games load much faster and run smoothly even on a slow connection.
Get notified directly on your phone whenever there's a new bonus, promotion, or special offer. Never miss an opportunity.
Log in with your fingerprint or Face ID in just one second. No need to remember your password.
Some games can be played offline when there is no internet connection. Everything syncs automatically once you reconnect.
With SSL encryption and two-factor authentication, the 3999vi app keeps your account and funds fully secure.
The app will notify you whenever a new update is available. Get new games, features, and security patches with ease.
Millions of people in Bangladesh now game on mobile. Whether you're commuting, on a break at work, or winding down before bed — you want to play whenever the mood strikes. That's exactly why 3999vi built their mobile app. Rather than simply squeezing a website onto a smaller screen, the entire experience was redesigned from the ground up for mobile.
The app is only about 10 MB, so it does not take long to download — even on a 3G connection, it finishes in minutes. Installation is straightforward; just follow the steps below. If you get a new phone or reset your device, simply download it again.
Many users wonder whether downloading the APK is safe. The official 3999vi APK is completely safe — it undergoes regular security audits and contains no malware or viruses. Always download the APK from the official 3999vi website only, never from third-party sites.
The process is a little different for iOS users. Due to Apple's policies, direct APK installation is not possible. However, the 3999vi website works as a Progressive Web App (PWA). Open the site in Safari, tap the "Share" button, and select "Add to Home Screen". From then on, it will appear on your home screen and run in full screen, just like a native app.
Once you log in to the 3999vi app, your balance, history, and bonuses are all in one place. Deposits and withdrawals can be done directly from the app — Mobile Banking, Nagad, and Rocket are all supported. No need to open a browser separately.
The app's game library is just as complete as the website. Slots, fish games, Live Casino, Sports Betting — everything is available in the app. The graphics are just as sharp, and many users find the touchscreen experience even more enjoyable on mobile.
The 3999vi app is also highly efficient when it comes to battery and data usage. Data consumption during a gaming session typically stays between 50–100 MB per hour, which is significantly less than streaming. There's also a battery saver mode to help you play for longer.
Good news for users with older phones too. The 3999vi app runs on all versions from Android 5.0 (Lollipop) onwards. That said, devices with more than 1 GB of RAM will run games more smoothly. Even mid-range processors like the Snapdragon 400 series handle all games without any issues.
A stable internet connection is needed to play Live Casino games on the app. With 4G or Wi-Fi, the live dealer video stream comes through crystal clear. It also works on 3G, though you may experience occasional lag. For slots or fish games, connection quality is much less of a concern.
You can reach 3999vi customer support directly from the app. Live chat is always available. Whether you have a deposit issue, a stuck transaction, or a question about a game, help is just a few minutes away.
| Features | 3999vi App | Browser |
|---|---|---|
| Loading Speed | Much faster | Moderate |
| Push Notifications | Available | None |
| Biometric Login | Available | None |
| Offline Mode | Partial | None |
| Battery Usage | Low | High |
| Data Usage | Low | Higher |
| Installation | Required | Not Required |
| Update | Automatic | Always Up to Date |
| Number of Games | 500+ | 500+ |
IPhone and iPad users cannot install the APK directly due to Apple's App Store policies. However, 3999vi's PWA works just like a regular app.
Push notifications for iOS PWA are supported from iOS 16.4 onwards. On earlier versions, you will not receive notifications, but all other features work fully. PWA installation is not available on iOS versions below 13.
Install for free, register, and claim your welcome bonus. The best mobile gaming experience is waiting for you.