Realme has just begun releasing December 2021 Security Patch for Realme X7 users, this is the first Realme device to get the latest December 2021 Security Patch, this might contain a lot of improvements in the system of the device along with fixes in the lock screen & UI.
Realme X7 was released on 08th, September,2020 was released with Android 10 out-of the box.
This update comes with December and November 2021 security patches and a few improvements in the system and settings along with bug fixes.

Source>>Realme Community
| Android OS | Update | Release Date/Status | Estimated Months |
| Android 10 | Out-of-the-box | September 2020 | Nil |
| Android 11 | First OS update | August 2021 | 11 months |
| Android 12 | Second/Last OS update | expected | – |
The Realme X7 came with Android 10 out-of-the-box and received its first major update in August of this year and is expected to get a highly anticipated Android 12 update, soon after the official announcement held of Realme UI 3.0 for the device
Check out: Realme Android 12 Update list Based on Realme UI 3.0
Hence, for Realme X7 Android 12 Update will be the last major OS update on this device.
Device: Realme X7 came out with Android 10 with out-of-the-box.
Once the update is available on your device, you can head over to Settings >> About Phone >> Software Update section to update your Realme device with the latest security/software update
For more Realme Android updates please download our Android App – Available on the Play Store