Is roaming free in Papua New Guinea with Australian or US SIMs, or should I use CoreESIM?

Roaming in Papua New Guinea with an Australian or US SIM is typically not free and often incurs extremely high per-MB data rates, leading to significant bill shock. CoreESIM offers a cost-effective and transparent alternative by providing local data access through partner carriers like Digicel PNG or Telikom PNG. Utilizing CoreESIM for your data needs in regions like Port Moresby or Lae is strongly advised to manage costs and ensure predictable connectivity compared to international roaming charges from home providers.