The worst dialer app ever created in history of android, even the dialer present in gingerbread was better than this. I never thought a xiaomi phone could be this bad just due to this abominable app. Miui dialer is amongst the best. Google should be ashamed for creating this dissappointment. It makes the the whole experience so crippled not just calling. It sabotages apps and games when a call comes, it goes full screen and disrupts the connection of active app before call.