Download the official 3999bt mobile app and turn your smartphone into Bangladesh's premier online casino and betting platform. Whether you're on Android or iOS, enjoy the same fast, seamless experience on both.
Android users, please enable "Unknown Sources" in your Settings before downloading the APK file. iOS users can install the app directly from the App Store.
Why the app beats the browser — here's everything you need to know
The 3999bt app is specially optimised to load games quickly even on weak networks — it runs smoothly on 2G or 3G connections.
Bonus offers, free spins, match results, and promotional updates will be delivered straight to your phone — so you never miss a thing.
Log in with your fingerprint or Face ID in just one second — no more typing passwords.
Some games are available in demo mode even without an internet connection. Your in-app balance and data are always kept secure.
Use dark mode to reduce eye strain during late-night sessions. The app automatically follows your phone's theme settings.
All your transactions and personal data on the 3999bt app are protected with AES-256 encryption. No third-party access — ever.
The app is fully operable in Bangla. Menus, notifications, and the help section are all available in Bangla.
Get real-time cricket and football scores along with live betting odds right inside the app — no separate app needed.
Chat directly with Bangla-speaking customer support right from the app. Guaranteed response 24 hours a day.
The 3999bt app is more than just a gaming app — it's a complete entertainment platform. Everything available on the website is right here in the app, with the same quality. From slots and Live Casino to cricket betting and e-sports, it's all at your fingertips.
The app's home screen shows you today's top offers, active tournaments, and your favourite games — all in one place. You can also customise the home screen to suit your preferences.
Slots, Live Casino, Bingo, and more
Chances to win prizes every week
Instant transactions via bKash, Nagad & Rocket
Exclusive offers for app users only
Installing the 3999bt app takes just a few minutes. Simply follow the steps below.
Click the APK download button on the 3999bt app page. The file will be saved to your phone's Downloads folder.
Go to Settings → Security → Unknown Sources and toggle it on. This allows apps from outside the Google Play Store to be installed.
Tap the downloaded APK file and press "Install". Installation will be complete within 30 seconds.
Open the app, log in with your 3999bt account or create a new one, and start playing.
Open the App Store on your iPhone or iPad and search for "3999bt" in the search bar.
Find the official 3999bt app and verify the icon and description before installing.
Tap "Get", confirm with Face ID or Touch ID, and the app will download and install automatically.
Once installed, open the app, log in to your 3999bt account, and enjoy a fully iOS-optimised gaming experience.
Many users wonder — if the browser gives me everything I need, why bother downloading a separate app? The truth is, the 3999bt app has a clear edge over the browser in several key areas.
First, the app loads significantly faster thanks to a more advanced caching system. Second, biometric login, push notifications, and offline mode are available exclusively on the app. Third, app-exclusive bonuses and offers are reserved for app users only.
| Features | 3999bt App | Browser |
|---|---|---|
| Fast Loading | ||
| Push Notifications | ||
| Biometric login | ||
| App-Exclusive Bonuses | ||
| Live Score Widget | ||
| Full Game Access | ||
| Payment Options |
Minimum device requirements to run the 3999bt app
3999bt always gives app users that little bit extra. Download the app and log in for the first time to receive a special app-welcome bonus — not available to website users.
On top of that, app users get weekly free spin offers, cashback deals, and special tournaments. Keep push notifications on to be the first to know about these offers.
✅ ৳50 free bonus on first login
✅ 20 free spins every Friday
✅ Extra 5% bonus on in-app deposits
✅ Monthly exclusive rewards for VIP members
✅ Referral Bonus — Earn ৳100 for every friend you invite
In today's busy world, sitting in front of a computer for hours isn't always an option. Whether you're commuting, on a break at work, or relaxing at home, 3999bt's mobile app was built with exactly that lifestyle in mind.
The biggest advantage of the 3999bt app is that it is a fully native app — not a web-based wrapper. This means it makes full use of your phone's hardware, resulting in faster game loading and smoother Live Casino video streaming. The app performs reliably even on older Android devices.
Many Bangladeshi users ask whether it's safe to download the 3999bt app. The answer is yes — completely safe. APK files downloaded from the official 3999bt website are malware-free and regularly put through third-party security audits.
In the Sports Betting section of the 3999bt app, you'll find live and pre-match betting on 20+ sports, including cricket, football, badminton, tennis, basketball, and e-sports. Live betting is available for all major tournaments such as the BPL, IPL, and Cricket World Cup.
The app's casino section features over 300 slot machines from the world's top software providers, including Pragmatic Play, PG Soft, Habanero, and NetEnt. Each game's RTP is clearly displayed so you can always make an informed choice.
In the Live Casino section of the 3999bt app, you'll find live tables from Evolution Gaming and Pragmatic Play Live — including Baccarat, Roulette, Blackjack, Dragon Tiger, and all other popular live games, all in the same high video quality on mobile. With 4K streaming support, the picture is exceptionally crisp.
The 3999bt app's payment system is simple and secure. Deposit in just a few taps via bKash, Nagad, Rocket, or DBBL Nexus Pay. Withdrawals typically reach your account within 5 to 15 minutes, and VIP members enjoy instant withdrawals.
The 3999bt mobile app has set a new standard for online betting and casino gaming in Bangladesh. If you've only ever played on the website, give the app a try — you'll notice the difference straight away. Download it now and experience mobile gaming at its best.
Answers to the most frequently asked questions about the 3999bt app
Download now for the best mobile betting experience in Bangladesh and claim your app-exclusive bonus.
Safe Download · Virus-Free · Official Source