I've had issues on Telstra. Sometimes the phone UI will prevent you from answering the call. Sometimes the phone crashes mid-call. Sometimes you answer the phone and you can hear the other party but they can't here you.
A similar thing happens on my Sony Ericsson S500 phone on Vodafone.
I don't know if it's the phone or the network - I haven't done much testing. It's quite irritating pressing the answer button repeatedly and the phone not answering the call, or when I call someone and I end up unable to hear them while they can hear me.
I don't know if it's the phone or the network - I haven't done much testing. It's quite irritating pressing the answer button repeatedly and the phone not answering the call, or when I call someone and I end up unable to hear them while they can hear me.