I have been experiencing issues with my Optus 3G coverage since moving to Calwell.
Reception was woeful. During almost every call, the phone was dropping out 4-5 times. As you can imagine, my frustration levels bloomed. (along with my phonebill.)
After receiving a particularly large bill, I complained to Optus and negotiated a substantial bill reduction. In their words, “Calwell has very little 3G coverage.”
I now turn my 3G network connection off while on my property, and my reception has been great since then.
If any Calwell Rioters are experiencing a crap connection, turn off your 3G while in the suburb. (And don’t forget to ring your provider and demand a partial refund on your bill.)