Realme C21: November 2021 Security Patch with C.04 Build
Realme C21 software update
Realme released the November 2021 security update for the Realme C21 smartphone via OTA. Recently Realme C21 received its first android update i.e android 11 with UI customization options, a new fun design, three-style dark mode, notification history, and more.
Realme C21 is released in March 2021 with android 10 out-of-the-box.
This device already got September 2021 Security Patch with C.03 Build recently, but again comes with stability improvement.
Update details
- Device: Realme C21
- Android: Android 11
- Realme UI: Realme UI 2.0
- Build number: RMX3201_11.C.04
- update size: 226 MB
- Update type: Security update
- Security Patch: November 2021
- Release Date: 16th November 2021


Source: Realme community
Official changelog
- Security
- Android security patch: November 2021
- System
- Optimized the system performance
- Optimized the system stability
How long Realme take for the update?
Android OS | Update | Released date/status |
Android 10 | Out-of-the-box | March 2021 |
Android 11 | First OS update | September 2021 |
Android 12 | Second/last Os update | Eligible/unconfirmed |
How long will Realme C21 get updates?
The Android 11 Update is its first major OS update which was released in September 2021 And, it is eligible for the upcoming Android 12 update too.
The Android 12 update will most probably be the last major OS update for it. But, it is still unconfirmed.
- Out-of-the-box: Android 10
- First Update: Android 11
- Second Update: Android 12 [Last update] [Eligible] [Unconfirmed]
How To Check Software Update On Any Realme Smartphone?
- Open Settings.
- Scroll Down and Find Software Update; Tap On It.
- And If There Would any Update available it will appear there.
- Then Hit Download and this is how you can check Software Update on any Realme Smartphone.
More on Realme from us
- Realme 6i: November 2021 Security Patch
- Realme 6: November 2021 Security Patch
- Realme X2 Pro: November 2021 Security Patch with F.14 Build
- Realme C15 QE: November 2021 Security Patch with C.08 Build
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