Samsung M31 Android 12 & One UI 4.1 many issues with internet connection and ui lags

[userZ0uU50T8Oq]

Hello after installing an update with Android 12 & One UI 4.1 on Samsung M31 i'm facing many issues:

- internet connection - it's showing that it's connected 4G but it is very slow. Tested on speedtest too 😞

- ui lags. The biggest one is that now cold start is very long (while showing every app logo) and IMHO quite every time is cold-start.

- charging is fast, but uncharging is also much faster that it was. 

How can I know the version of the previous firmware? I want to install it. 

[Samsung_Moderator]

Thanks for reaching out. This forum is for support of US products and customers. As your product is a non-US model and support for these models is very limited, please seek a support team for your area. You can do so by using this link: https://www.samsung.com/us/common/visitlocationsite.html

[JohnCurzon]

Slower charging