Version and size shown up front
You see 3.9.9 and 36.1 MB before the file starts, so you can match the APK on your phone instead of guessing from a random icon in Downloads.
Official Android APK · Bangladesh
ban21
ban21 Bangladesh | Official Android APK Hub v3.9.9
Official Android hub for Bangladesh users — current package 3.9.9, about 36.1 MB. Check the listing here, then use the download guide when you are ready to install on Wi-Fi or mobile data.
What is ban21 for Bangladesh Android users?
ban21 is an Android APK channel for people in Bangladesh who want the current package without hunting unmarked files from chat groups. The active build is version 3.9.9 with a main APK size of about 36.1 MB. On this homepage you can confirm those details, start the download, then move to install, login, or help pages when you need them.
Most users follow the same order: check version and size here or on the App page, open the Download walkthrough if it is your first install, allow install from your browser when Android asks, then use Login after the app opens. The Official page helps you stay on the intended channel.
Whether you are on home Wi-Fi in Dhaka or mobile data in Chattogram, Sylhet, or other cities, a stable link matters more than rushing the tap. The lighter ARM package (about 23.9 MB) is useful when 4G is tight; the previous release v3.9.8 stays listed if you need to compare builds.
You do not need to pay bKash, Nagad, or Rocket only to “unlock” an APK that is already listed here for free. If a site demands payment before a basic download, leave it and come back to this channel.
36.1 MB
Main APK package
23.9 MB
ARM package
25.7 MB
Previous version size
v3.9.8
Previous release
ban21 on your Android phone
A quick look at the package flow Bangladesh users follow — from the listed APK to install and first open.
Need the full walkthrough? See the Download page or the App overview.
Why Bangladesh users pick the ban21 channel
Works on Wi-Fi or mobile data
Home Wi-Fi is usually fastest. On Grameenphone or Robi 4G, the ARM package and off-peak hours often finish more reliably than a heavy evening transfer.
Free listing — no fake unlock fee
The APK here is listed without a download charge. Skip “VIP unlock” pages that ask for bKash or Nagad before you can even start the file.
Clear path after the APK lands
Download → allow unknown sources → install → open the app → login when you need an account. Each step has a matching page on this site.
Help when Android blocks the install
Unknown-source prompts, “app not installed”, and stuck downloads are covered on the Guide so you are not left with a half file.
Official channel to cross-check
When look-alike domains show up in ads or Messenger, use the Official page to confirm you are still on the intended ban21 source.
Who uses ban21 in Bangladesh?
Common situations for people looking up the ban21 APK on Android.
First-time APK installers
If this is your first sideload, start with the package facts on this page, then follow the Download steps. Android will likely ask to allow install from Chrome or Files — turn it on for this install, then open the finished 3.9.9 APK.
Keep about 80 MB free so the installer has room for temporary files, not only the 36.1 MB package itself.
Users updating from an older build
Moving from v3.9.8 or another older file? Confirm the new size and version before you overwrite. A clean download of 3.9.9 avoids mixing a partial file from an earlier attempt.
If update install fails, uninstall the broken copy, free storage, and install the fresh APK again from this channel.
People on busy mobile networks
Evening 4G in Dhaka and other cities can drop mid-transfer. Prefer Wi-Fi when you can, or use the smaller ARM package and retry after peak hours. Dual-SIM users often download on the stronger data SIM.
A completed file that matches 3.9.9 / 36.1 MB is safer than installing a truncated download.
Users who need login after install
Download first; account access comes after the app opens. The Login page covers prep, safe habits, and what to do if OTP or password entry stalls.
Never share SMS codes with anyone claiming to be “ban21 support” in WhatsApp or Facebook Messenger.
Regional note · Chattogram · contributor Nusrat
Before you install the ban21 APK
Quick checks that prevent most failed installs on Bangladesh Android phones.
- Free enough storage for the 36.1 MB APK plus install space — aim for about 80 MB free overall.
- Use stable Wi-Fi when possible; on Grameenphone or Robi, avoid the busiest evening window if downloads keep restarting.
- When Android asks, allow install from your browser or Files app for this package only.
- Confirm your phone runs Android 6.0 or higher before you start.
- Download from this ban21 channel so version 3.9.9 matches what you expect on the finished file.
- Delete incomplete APKs in Downloads if a previous attempt stalled halfway.
- Skip look-alike sites and chat attachments that hide the real version number.
- After install, open the app and use Login only when you need your account — not before the APK is installed.
What a typical ban21 visit looks like
Most people land here to confirm the live package, tap Download APK, and finish install on the same phone. Version 3.9.9 and the 36.1 MB size stay visible so you are not installing a mystery file. If you want a fuller product overview first, the App page covers features and specs without repeating the install checklist.
On a stable connection the transfer is short; on crowded mobile data it may need one retry. That is normal. What matters is ending with a complete file, allowing the unknown-source prompt, and confirming the version before Install. The Download page expands each of those steps.
After the app opens, login or register when you need an account. For stuck installs, permission errors, or “app not installed” messages, the Guide walks through the fixes Bangladesh users hit most often — without sending you through random third-party “fix APK” blogs.
Prepare your phone for ban21 3.9.9
A short ready-list before you start the 36.1 MB download.
- Connect to Wi-Fi or a reliable 4G signal; pause other large downloads so the APK can finish.
- Check free storage — keep room beyond 36.1 MB for the installer.
- Know where Android will ask to allow unknown apps (Chrome, Samsung Internet, or Files).
- Update Android if your system is far below 6.0 and cannot meet the minimum.
- Keep this tab or the Official page bookmarked so you do not jump to a look-alike domain from an ad.
- If you only need the lighter build, note the ARM size (23.9 MB) on the package strip above.
Ready to download ban21?
36.1 MB package · version 3.9.9 · rating 4.9 · 735K+ downloads
Start download nowWhat is ban21 for Bangladesh users?
ban21 is an Android APK channel for Bangladesh. Here you can see the current package (version 3.9.9, about 36.1 MB), follow install notes, open login after install, and stay on the official listing instead of unmarked chat files.
How do I download the ban21 APK?
Tap Download APK on this site or open the Download page for the full walkthrough. Prefer Wi-Fi for the 36.1 MB file. On Grameenphone or Robi 4G, try outside the busiest evening window so the transfer does not stall.
Is the ban21 APK free in Bangladesh?
Yes. The APK listed here has no download fee. Skip pages that ask for bKash, Nagad, or Rocket payment only to unlock a so-called VIP APK.
Which Android version does ban21 need?
Android 6.0 or higher for most phones. Keep enough free storage for the 36.1 MB APK plus temporary install files — about 80 MB free is a safe buffer.
Do I need to register before downloading?
No. Download and install first. Login or register inside the app after it opens. Never share OTP codes with anyone claiming to be support on WhatsApp or Messenger.
What should I do if ban21 will not install?
Allow install from your browser or Files app when Android asks, free storage for the package, delete any incomplete APK, and download version 3.9.9 again. The Guide covers common Bangladesh install errors.
What is the latest ban21 version?
The active release is 3.9.9. The previous build was 3.9.8. Confirm the version on the finished file before you tap Install.