While some mobile network operators, like Rain, which recently zero-rated the digital content of 23 PBOs, have come to the party. The DG Murray Trust (DGMT) is calling all the major South African networks to do the same. Mobile network operators are legally obligated to make the content of PBOs data-free as part of their licensing conditions. This rule applies to all mobile network operators that successfully bid for new spectrum during a multi-billion-rand auction held by the Independent Communications Authority of South Africa (Icasa) in 2022. Slow to implementIn May last year, Icasa published regulations outlining the process that PBOs had to follow to be zero-rated.