Best Phone Plans in Sydney 2025: Prepaid, SIM-Only & Family Plans

Choosing the right phone plan in Sydney comes down to three networks: Telstra (best regional coverage), Optus (strong metro performance), and Vodafone (now merged with TPG). For most Sydney residents, a SIM-only plan from a Telstra or Optus MVNO like Boost, Woolworths Mobile, or Circles.Life offers the best value without locking into a contract.