Ok, like the title said. The MIUIv04 beta 2 has mobile data connection issue that beta 1 didn't have (It has a hotfix). But, the beta1 version is unstable and incall volume is so low.
So, anyone can fix this?
P.s: and one more issue is that when I open music app to listen and lock the screen it'll be lag and can wake up anymore. Can you fix this too, mah friends.
Thanks so much for your solution.