Realme announced the Android 13-based Realme UI 4.0 open beta for the X7 Max 5G in December, and it seems the testing has gone smoothly since the company has announced the rollout of Realme UI 4.0's stable update for the X7 Max 5G. The stable Realme UI 4.0 is rolling with firmware version RMX3031_11.F.04, but you'll receive it on your X7 Max 5G only if it's running firmware RMX3031_11.C.16 or RMX3031_11.C.17. It's also worth mentioning that the update is rolling out to a limited number of users right now, and a broader rollout will commence by the end of February if no bugs are...
Source: https://www.gsmarena.com/realme_x7_max_5g_android_13_realme_ui_4_stable_update-news-57462.php