I live in Sydney metro and Telstra simply has weak indoor 4G reception. I have an Optus SIM in my second SIM slot and it works when I'm out of Telstra 4G range.
So far I've noticed subpar reception indoors in Sydney CBD, and when working on the train it would drop out near Redfern and Campsie. Generally it's just indoors that I have problems with though.
Has anyone had any experience in getting out of a contract due to poor reception?
Why jump straight to wanting to exit the contract?
Have you tried contacting Telstra and raising a fault?
Telstra aren't just gonna take your word for it. You need to at least have tried to resolve it before considering alternate options..