It´s not the phone fault that contacts disapear. It,s because of a upgrade to MS account some people has their picture disapear from the contacts and even some contacts. I took them down to outlook on PC and copied to a nother contacts folder and deleted them on the outlook account and put them back again and after that it worked nice. We got an new 4 Pro but sorry to say it got the same audio problems... What i can se is the IDOL using HD Audio with our operator but when i use a Lumia i doesent say HD AUDIO in the display during a call. Perhaps Alcatel activated HD AUDIO on hardware but Win 10 Mobile dont work with it yet or never. Alcatel is checking with their technicans. Whery nice phone but a hard start. :I