Comment 1 for bug 1480844

One way that I have to reproduce it (because it happens always to me) is being connected to wi-fi (I am at home), then move to an area with no connectivity (down the stairs, no wi-fi or mobile connection), finally move to an area with only mobile connection.

At this point I believe that something starts using a lot of CPU and the phone hangs but I cannot investigate what it is, because when it goes back to being responsive everything is fine.