I’ve been using HTC Mozart Windows Phone for a few months and I’m quite happy with that phone.
Unfortunately, I got an issue after updating latest version of Mango yesterday. I was using the early version of Mango as well. I didn’t have any problem until yesterday. The problem is that I couldn’t able to detect my wi-fi network from my phone. I tried quite a few way to fix that issue. I even did the hard-reset for my phone but didn’t work. My friend suggested me to change the wireless channel of my router. Finally, the trick did work. So, I’m just sharing what I found here. Hopefully, it would help someone.. :)