Opensignal's Q1 2026 South African fixed broadband benchmarking report shows specialist ISP Vox winning all five categories — download speed, upload speed, consistent quality, video experience, and reliability — ahead of mobile operators Vodacom, MTN, and Telkom. Vox's structural advantages include a sister-company relationship with fibre network operator Frogfoot and Google peering accreditation. Rain placed second on three metrics, while Telkom finished last on download speed and reliability despite its Openserve division leading in homes passed. The report covers only six of South Africa's 200+ ISPs and does not disclose sample sizes. South Africa's fixed broadband market grew 19.3% year-on-year to 3.26 million subscriptions in 2025, with fibre subscriptions up 22%.
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