❓ Help Centre
Frequently Asked Questions
Whatever questions you have about 399b — from accounts to payments, games to bonuses — you will find all the answers here in English.
At 399b we want every player in Bangladesh to play easily, with peace of mind and enjoyment. On this page we have provided detailed answers covering account opening, depositing and withdrawing money via bKash and Nagad, cricket betting, slot games, bonus terms and responsible gaming. If you cannot find an answer to your question, our 24/7 live chat support is always ready.
Section 01
Account and Registration
To open an account at 399b, you need an active mobile number, a password and your name. The registration process is simple and takes just a few minutes to complete. Additional identity verification may be requested to confirm your account. All information is transmitted through secure SSL encryption.
No, each person may only open one 399b account. Creating multiple accounts is a violation of our terms of use. If duplicate accounts are detected they will be closed and any bonuses may be cancelled. This rule is strictly enforced to ensure a safe and fair gaming environment.
Click the "Forgot password?" option on the login page and enter your registered mobile number. A verification code will be sent and you can use it to set a new password. The whole process is quick and secure. If you have any trouble, contact our 24/7 live chat support.
Yes, 399b is only for people aged 21 or older. You will need to confirm this age requirement when creating an account. If an underage account is detected it will be closed immediately and all transactions will be cancelled. Responsible gaming is our highest priority.
399b can easily be used on any smartphone through the mobile-friendly website. Open the site in Chrome or Safari and save a shortcut to your home screen — you will get an experience just like an app. The site works smoothly on both Android and iOS devices.
Section 02
Deposits and Withdrawals
Deposits via bKash are generally instant — in most cases the money appears in your 399b account within a few minutes. Occasionally it may take up to 15 minutes due to bank server load. If there is an issue, contact live chat with your payment reference number for assistance.
The minimum deposit amount at 399b is ৳300 — this applies equally to all methods: bKash, Nagad, Rocket and bank transfer. This accessible limit ensures that players with smaller budgets can also enjoy the 399b experience with ease.
Send money to 399b's designated Nagad number using the Nagad app or USSD (*167#). Use your 399b user ID as the reference when making the deposit so your account is credited quickly. If you enter the correct amount and reference, your balance will update within minutes.
399b generally processes withdrawals within 1 hour. This is something we take pride in — we are committed to providing the fastest withdrawal service in Bangladesh. Withdrawal requests are sent to bKash, Nagad or Rocket subject to verification.
The minimum withdrawal amount at 399b is ৳1,000. 399b generally does not charge any additional fees on withdrawals. However, mobile banking operators (bKash, Nagad, Rocket) may apply their own receive charges. Contact live chat for the latest fee information.
Yes, 399b supports Rocket and direct bank transfer (including Dutch-Bangla, City Bank, BRAC Bank, Islami Bank, Sonali Bank and others). Processing time for bank transfers may be slightly longer, but the minimum deposit amount of ৳300 remains the same for all methods. See the payment page for deposit instructions.
Section 03
Games and How to Play
To bet on Bangladesh Premier League (BPL) matches you need sufficient balance in your account. Go to the sports betting section, select BPL, choose your preferred match and market (match winner, toss, top run-scorer, etc.) and enter the bet amount. You have the option to change or cancel a bet up until the match begins.
399b has a large collection of slots from leading providers including PG Soft, Pragmatic Play and JILI. You can play many popular games including Fortune Tiger (PG Soft), Gates of Olympus (Pragmatic Play), Fortune Gems (JILI) and Sweet Bonanza. There are options for every taste — from classic slots to Megaways and crash games.
Yes, in 399b's live casino section you can play in real time with real dealers from top providers such as Evolution Gaming and Ezugi. Live Roulette, Live Blackjack, Live Baccarat and Teen Patti are all available. HD streaming and a chat feature in Bengali are also available.
RTP, or Return to Player, is the theoretical figure showing what percentage of total bets a game returns to players over the long term. RTP varies between games and is determined by the game provider. A higher RTP means theoretically more return, but every round is completely separate and unpredictable.
Aviator (Spribe) is a crash game where a plane starts flying and a multiplier keeps rising. If you cash out before the plane crashes, you win according to that multiplier. If you cash out after it crashes, you lose your bet. It is fast-paced, exciting and very popular in Bangladesh.
All games at 399b are supplied by world-class providers (PG Soft, Pragmatic Play, JILI, Evolution Gaming) who use certified RNG (Random Number Generator) technology. This technology ensures every result is completely random and not predetermined. Third-party auditors regularly verify this fairness.
Section 04
Bonuses and Promotions
New members at 399b receive a 120% bonus on their first deposit — up to a maximum of ৳8,000. For example: deposit ৳3,000 and receive a ৳3,600 bonus, giving a total balance of ৳6,600. To receive the bonus, make your first deposit after registering. This is one of 399b's most attractive offers.
A wagering requirement is the condition that specifies how many times you must bet the bonus amount before you can withdraw it. For the 399b welcome bonus it is just 10x — meaning you need to complete bets totalling 10 times the bonus amount. Compared to many other platforms in Bangladesh, this is very low and convenient for players.
Joining the 399b VIP program is automatic — after registering you are automatically placed at the Bronze level. As your play volume increases you will be promoted to Silver, Gold, Platinum and the highest level, Diamond. Weekly cashback increases at each level — from 0.2% at Bronze up to 1.2% at Diamond.
Cashback is automatically added to your account each week based on your net losses, according to your VIP level. The cashback rates are up to 0.2% at Bronze, 0.5% at Silver, 0.7% at Gold, 1.0% at Platinum and 1.2% at Diamond. It will appear in your balance on a set day each week.
Yes, 399b periodically offers special promotions for Bangladesh's major festivals (Eid ul-Fitr, Eid ul-Adha, Pohela Boishakh) and cricket seasons (BPL, T20 World Cup, IPL). Check the site regularly or ask on live chat to find out about the latest offers.
Section 05
Security and Responsible Gaming
399b uses SSL (Secure Sockets Layer) encryption to keep all your personal and financial information secure. Information stored on our servers is protected by strong encryption and is never shared with third parties. We are committed to earning your trust as a safe and reliable platform.
399b places the highest importance on responsible gaming. You can set a daily deposit limit, betting limit or self-exclusion (temporarily closing your account for a set period) if you wish. To use these features, check your account settings or make a request via live chat. Visit the responsible gaming page to learn more.
The process for reactivation depends on the type of self-exclusion. For short-term restrictions, the account may be automatically reactivated when the set period ends. For long-term self-exclusion, you will need to contact our support team. We always prioritise the wellbeing and safety of our players.
If you notice an unauthorised login or any suspicious transaction on your 399b account, change your password immediately and contact us via live chat. Our security team is active 24/7 and will quickly investigate any irregularity and provide a resolution.
If you feel that gaming is having a negative impact on your life or relationships, please seek help. 399b's live chat is available in Bengali 7 days a week, 24 hours a day. Talk to family or trusted friends, and you can also seek help from a professional counsellor.
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