Have been extensively using the phone, at times for a little over a hour continuously. Spotted a pattern.

At the stroke of half hour , the line went dead. And it was the same, irrespective of whether i received the call from or dialled to a landline number or a mobile.

However, there is one commonality, 90% of the time, my mobile was in use. And my service operator, while boasting the foot print advantage, has so far turned in a dismal service and value-add show.