After the last security patch update my m31 faces serious network issues. Myn4G network automatically changes to H+ after a while and then my browsing speed becomes almost 0Kbps.
The network switches back to 4G if i turn off the data.
Im using m30s and btw this is common to all androids, and you dont even need an app to access this menu. The code *#*#4636#*#* works on most devices to access this menu, its just that it dosent work on samsung and thats why you need a seperate app.
