In order to fulfill the basic functions of our service, the user hereby agrees to allow Xiaomi to collect, process and use personal information which shall include but not be limited to written threads, pictures, comments, replies in the Mi Community, and relevant data types listed in Xiaomi's Private Policy. By selecting "Agree", you agree to Xiaomi's Private Policy and Content Policy .
Seems like echo issue is fixed for normal calls but still exists for VoIP(Whatsapp, etc.)
However, I found one person is saying that it is best update (no touch issue, no battery drain, good thermal control). This might depends on users since it is based on personal exprience but I just want to share there is some feedbacks like this.