Southern Phone SIM-only mobile plans
unverified: not selling new SIM plans as far as its own pages show: on 2026-11-06, in a visible browser opened at the owner's request, its home page said eligible services 'are being transferred in the coming months to Energy Telco (South) Pty Ltd trading as Southern Phone Company, part of the Aussie Broadband group', and its SIM-only page (/personal/mobile/sim-only) returned 'Page Not Found'. Its SIM-only CIS (sthnphone.com/mobile-cis: Small 20GB $24, Medium 40GB $29, Large 80GB $34, Optus) is still published, for existing customers as far as can be told, so it is not priced.
Network: not stated. Not in the established list. JSON at /au/telco/mobile-plans/v1/providers/southern-phone.json.
Each plan
No plans could be read from its own documents.
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