M1cha,
In Hungary we have a long-standing and common issue with Mi2/S, regardless of MIUI or CM11 ROMs we are using. Both ROMs have the same behavior. We have discussed a lot about the issue below in famous Hungarian forum, but we cannot find solution yet. We did not get any help from MIUI side, even if they have informed about this issue. I trust in your knowledge and I hope you will support us. So, I try to explain for you what the problem is exactly:
Subject: Xiaomi phone outgoing call issue
Issue#1: Xiaomi phone cannot detect if the called phone is busy --> If you are calling someone who is speaking on the phone, and the “call waiting” option disabled in the called phone, then you have to hear “busy” signal through the speaker.
Issue#2: Xiaomi phone cannot detect if the “call waiting” option enabled in the called phone --> If you are calling someone who is speaking on the phone, and the “call waiting” option enabled in the called phone, then you have to see “call waiting” message on your display while ringing out your phone.
It is the most serious issue with Mi2/S! These are basic functions, and both of them are working perfectly with all other phones (except Xiaomi), including oldest phones as well.
Is it ROM related issue? If yes, could you please solve it? What is your opinion?
