O2 and Virgin Mobile customers will see their bills hiked by as much as £48 a year as the cost of living crisis continues to squeeze households.
Both networks, which merged last year as part of a £31billion tie-up, will raise prices for some pay monthly customers by up to 11.7%.
This is calculated based on the retail price index (RPI) rate of inflation - which now stands at 7.8% - plus 3.9%.
