Hi, I lived in Sydney.   I noticed that my mobile could not make or receive call in certain area.   A few days ago, I experienced the issue in Luxford Road in Shalvey.  I do not have problem make or receive calls in area around my home at Kellyville.  In Dec when I travelled to Brisbane, I could make calls in Brisbance but I could not make or receive call at Tin Can Bay area.   In all cases, I can still access mobile data.   But people cannot call me and I cannot call them.   See whether you can help. ... View more