3999det, Bangladesh's most trusted betting platform, is now available on your smartphone. cricket, football, slots — all in one app, anytime, anywhere.
The 3999det app works seamlessly on Android, iOS, and any browser. Choose the option that best suits your device.
The 3999det Android app is the most widely used option in Bangladesh. You can download and install the APK file directly. To install from outside the Google Play Store, enable "Unknown Sources" in your phone settings — the whole process takes under 2 minutes.
Android DownloadThe 3999det iOS app is specially optimized for iPhone and iPad. Game graphics look stunning on a Retina display. Once installed, you can log in with Face ID or Touch ID for an extra layer of security.
iOS DownloadYou can enjoy everything 3999det has to offer without downloading the app. Just open 3999det.onl in your mobile browser and start playing right away. Works on Chrome, Firefox, and Safari. If your device is low on storage, this is the best option.
Play on Web
Install the 3999det app on your Android phone in just four steps. The whole process takes under 5 minutes.
Go to Settings > Security or Privacy on your Android phone and enable "Install from Unknown Sources." This is only required for APK installation.
Click the "Android Download" button on this page. The file will be saved to your phone's Downloads folder. With a stable connection, the download should finish in about 1 minute.
Tap the 3999det APK file in your Downloads folder. Press the "Install" button and wait a few seconds. The installation will complete automatically.
Once installation is complete, the 3999det icon will appear on your home screen. Tap it to open the app, log in to your account, and jump straight into betting or gaming.
Mobile betting has its perks. On the bus, during an office break, or right before bed — everything you need is right there when you open the 3999det app. It loads much faster than the website and uses less battery too.
Internet speeds in Bangladesh can be inconsistent at times. The 3999det app runs smoothly even on low bandwidth — live betting works fine on a 3G connection. There is also a Data Saver mode that reduces background data usage when enabled.
Another major advantage of the 3999det app is push notifications. Get instant alerts before a match kicks off, when big odds shift, or when your deposit goes through. This feature is not available on the web browser.
The 3999det app is more than just betting — it's a complete entertainment platform. Sports Betting on cricket and football, Live Casino, slots, poker, and much more, all in one app.
During BPL or IPL, the 3999det app lets you watch live matches in real time. Scores update instantly and odds change after every ball, making it much easier to place informed live bets.
Payments on the 3999det app are quick and hassle-free. Deposits via bKash, Nagad, or Rocket take just 30 seconds. Withdrawals typically arrive in your mobile banking account within 5 to 10 minutes.
Live and pre-match betting on 30+ sports including cricket, football, tennis, and basketball.
500+ slot machines. All the top games from the most popular providers, available right in the app.
Play Baccarat, Roulette, and Blackjack with real dealers, live.
Deposit in 30 seconds via bKash, Nagad, or Rocket. Withdrawals in 10 minutes.
3999det is accessible through both options, though the app offers a few extra features.
| Features | Android / iOS App | Mobile Web |
|---|---|---|
| Loading Speed | Fastest | Good |
| Push Notifications | Yes | No |
| Fingerprint Login | Yes | No |
| Data Saver Mode | Available | No |
| Installation Required | Yes | No |
| Live Score | Yes | Yes |
| Full Game Access | Yes | Yes |
| Offline Caching | Available | No |
For iPhone and iPad users, the 3999det installation process works a little differently. Due to Apple's security policy, it may not be available directly on the App Store, but you can add a shortcut to your home screen via the WebClip method in Safari.
The easiest way to install on iOS: Open 3999det.onl in Safari → tap the Share icon at the bottom → select "Add to Home Screen." This creates an app-like icon that runs in fullscreen mode.
The 3999det iOS app can also be installed via TestFlight. This method gives you the full native experience, including push notifications and biometric login. After registration, our support team will walk you through the process.
Many users wonder before downloading the 3999det APK — is it safe? The answer is yes. Our APK file is scanned by a third-party security firm before every release. It contains no malware, viruses, or spyware.
3999det uses 256-bit SSL encryption to keep your personal and financial data secure. When you log in through the app, your password is never stored on our servers — only a hashed token is kept.
Enabling Two-Factor Authentication (2FA) keeps your account even more secure. An SMS OTP is sent with every login attempt, preventing anyone else from accessing your account.
Scan the QR code with your camera to go directly to the download page.
Download the 3999det app for the first time and register to claim your special welcome bonus. Sign up now.
RegisterAnswers to the most frequently asked questions about downloading the 3999det app.
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