For ages I've had dreadful mobile reception in the Meadow Springs WA area, Several long calls with Tech assistance and absolutely no result. No bars in the house, continual call drop outs. I have to stand outside my house to have a conversation. Latest suggestion from Optus was to change my old Sim card, did that, no difference. Changed phone, no better. I'm fed up from standing under a tree to shelter from the weather... Anybody out there using a booster ? Optus used to supply them but stopped... I've been with Optus since '98, feeling unloved.. Ziggy.
Firstly, I love your loyalty.
With that phone the coverage map for Meadow Springs shows it should still be good, although you can check what it says for your exact location.
Have you got any family members/friends/neighbours also on the same network who have the same experience in your house?