Since WiFi talk has been cancelled my issues with reception have not been resolved.
I have therefore had to get another handset.
As I can only find 1 in my budget at Woolworths, I have had to cancel my Sim only and go to Telstra.
I have been a loyal Optus customer, having 2 phones and internet, also just getting 2 prepaids sims for my mother and sister in law to use while in Australia
Thanks for the feedback @Tazziemickdevil, we're sorry to see you go.
We do have alternatives to the WiFi talk app, such as WiFi Calling
Although, you do need a compatible handset.
WiFi calling is available on Apple handsets - iPhone 6 and above & selected Android handsets.
If any questions come up, let us know.