Realme has begun rolling out September 2021 Security patch for Realme X7 max. And also brings noticeable improvements in system performance & stability along with fixing the call forwarding in the Network Settings.
Realme X7 Max 5G was released on 04th June ,2021 with Android 11 Realme UI 2.0
This is a phased rollout and will reach users soon. This update was released on 30th September 2021.

Source >>> Realme Community
| Android OS | Update | Release Date/Status | Estimated Months |
| Android 11 | Out-of-the-box | June 2021 | Nil |
| Android 12 | First OS update | expected | unconfirmed |
| Android 13 | Second/Last OS update | – | – |
The Realme X7 Max came with Android 11 out-of-the-box and it’s anticipated that it receives an Android 12 update
Check out:Realme Android 12 Update list Based on Realme UI 3.0
Hence, for Realme X7 Max Android 13 Update will be the last major OS update on this device.
The Realme X7 Max came out with Android 11 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