399b FAQ — All Your Answers in One Place
Whenever a question comes up while using 399b, this page is your first stop. From registration and payments to choosing games and securing your account — you'll find clear, straightforward answers to everything here.
If you can't find what you're looking for, reach out to our support team: [email protected]
10+ FAQs
Bengali Support
24/7 Support
Registration Process
Login Issues
Bangladeshi Payments
Deposits & Withdrawals
cricket Betting
Slots
Live Casino
Account Security
Mobile App
Password Recovery
Registration Process
Login Issues
Bangladeshi Payments
Deposits & Withdrawals
cricket Betting
Slots
Live Casino
Account Security
Mobile App
Password Recovery
Frequently Asked Questions
To register on 399b, On the Register page, Enter your mobile number, name, and date of birth. Then set a strong password, agree to the terms and conditions, and complete your registration. The whole process takes just 3 minutes. Please note that only one account is allowed per mobile number and you must be 18 or older.
First, make sure you've entered your mobile number and password correctly. Check your internet connection and try clearing your browser cache before attempting again. If you've forgotten your password, contact us at [email protected] — we'll verify your identity and help you reset it.
399b is fully mobile-friendly. You can play directly by opening 399b.bio in any Android smartphone browser. For a faster, more convenient experience, get our Download Page to download the app. Your login details can be saved in the app, so you won't need to type them every time.
399b offers all the game types Bangladeshi players love. Enjoy Sports Betting including cricket and football, slot machines, Live Casino, card games, and jackpot games. On the Popular Games page, to see all available options and choose the one that suits you.
399b supports Bangladesh's popular mobile banking methods. You can easily deposit via bKash, Nagad, Rocket, and other local payment options. All transactions are processed in Bangladeshi Taka (৳ BDT). For more details, Payment Page for details.
399b has an affordable minimum deposit so everyone gets a chance to play. To find out the exact amount and withdrawal rules, Payment Page or contact our support team. Deposits are reflected in your account quickly after they're made.
To withdraw, log in to your account and select the withdrawal option. Enter your preferred mobile banking number and amount to initiate the request. If your account is verified, payments are typically processed quickly. For any issues, contact [email protected].
Use a strong password to keep your 399b account secure — a mix of letters, numbers, and special characters works best. Never share your password with anyone. If you notice any suspicious activity, contact our support team immediately. Avoid logging in on public Wi-Fi.
If you've forgotten your password, email [email protected] and include your registered mobile number. Once your identity is verified, we'll help you set a new password. For security reasons, this process is handled via email rather than phone.
Yes, 399b is fully available in Bengali. The platform is built specifically for Bangladeshi players, making it easy to navigate in Bengali, get support, and understand all content. Our support team can also communicate in Bengali.
The jackpot is 399b's special rewards system where playing select games gives you the chance to win big prizes. On the Jackpot page, to view active offers. To participate, simply log in to your account and play any jackpot-eligible games.
399b regularly offers a variety of promotions — welcome bonuses, reload bonuses, cashback, and special seasonal offers. On the Latest Promotions page, you'll find all active offers in one place. Read the terms and conditions for each offer carefully.
Didn't find your answer?
Contact our support team directly at [email protected] — or create an account right now and get started.