The 399btc app is available on both Android and iOS. From Live Casino and Bingo to Fish Games and instant deposits — everything in one place.
Android or iOS — whichever you use, 399btc is always ready
Compatible with any Android 5.0 or higher smartphone or tablet. Install directly via APK — no Play Store required.
Android DownloadOptimized for iPhone and iPad. Runs seamlessly on iOS 12.0 and above.
iOS Download
Why do millions of users choose the 399btc app?
Thanks to optimized coding and smart caching technology, the 399btc app loads fully in just 2 seconds — even on a slow network connection.
Your account and financial information are always protected through 256-bit SSL encryption and two-factor login verification.
Enjoy every moment of Live Casino with HD video streaming support — no buffering, no lag.
Get instant notifications about new bonus offers, events, and promotions. Never miss an opportunity again.
The entire 399btc app interface is built in Bengali. Menus, instructions, support — everything is in your native language.
From small phones to large tablets, the 399btc app's responsive layout adapts perfectly to any screen size.
Get the 399btc app up and running on your phone in just a few steps
Go to the download page on the 399btc website and select the Android APK or iOS link that matches your device.
On Android, an APK file will be downloaded. On iOS, the app can be installed directly through the App Store.
On your Android phone, go to Settings › Security › Unknown Sources and enable it. This only needs to be done once for APK installation.
Once installed, log in to your 399btc account and start playing your favorite games right away.
Smartphones are now an inseparable part of our daily lives — morning news, afternoon chats with friends, evening entertainment, all at your fingertips. 399btc understands exactly this need, which is why it built its own mobile app so you can step into the gaming world anytime, whether you're at home or on the go.
Many people assume that mobile gaming means a cramped experience on a small screen. The 399btc app completely changes that. The interface is designed to feel like a large-screen experience even on a phone. Live Casino dealers come through crisp and clear, Fish Game graphics are sharp and vivid, and Bingo balls are easy to follow.
Before installing the APK, make sure your phone has at least 100 MB of free storage. Once the installation is complete, you can turn off the "Unknown Sources" option again for added security.
Once you log in to the 399btc app, you're greeted with a clean, well-organized dashboard. Your balance is displayed at the top, popular games are listed below, and ongoing promotion notifications appear on the side. The layout is intuitive enough that even first-time users feel at home right away.
399btc has been optimized for low-bandwidth mode, keeping Bangladesh's internet conditions in mind. Core games run smoothly even on a 3G connection. For the best Live Casino experience, a 4G or Wi-Fi connection is recommended.
Making deposits and withdrawals through the app is now easier than ever. You can deposit via Mobile Banking, Nagad, or Rocket in just a few seconds. The 399btc app features a dedicated "Quick Payment" button where your preferred payment method is saved, so you never have to re-enter your details.
399btc app users get access to exclusive perks not available on the website. App-only bonuses, mobile cashback offers, and special tournaments are reserved strictly for app users. Weekly prizes are also awarded to app users through a lottery draw.
399btc takes security seriously and makes no compromises. When logging in to the app, you can enable biometric authentication via fingerprint or Face ID. Every transaction is also protected by a separate OTP verification.
Customer support is built right into the app. Tap the live chat button and you're instantly connected with 399btc's Bengali-speaking support team. Help is available at 3 AM just as it is at noon — the team is on hand around the clock.
See at a glance which option suits you best
| Features | 399btc App | Website |
|---|---|---|
| Loading Speed | Lightning fast | Fast |
| Push notifications | Yes | No |
| Biometric Login | Yes | No |
| App-exclusive bonuses | Yes | No |
| Offline mode | Partial | No |
| Live Casino | Yes | Yes |
| Bangla Interface | Yes | Yes |
| Quick payment | Saved Methods | Normal |
Answers to the Most Frequently Asked Questions
Join the platform trusted by millions of Bangladeshi gamers. Registration is free. Download is free.