(Telecompaper) America Movil has reacted strongly to the latest attempt by Mexican telecommunications regulator IFT to curb its dominance of the sector, vowing to challenge the new rules in accordance with applicable law. In its delayed review of the 2014 ruling declaring America Movil a "dominant agent" in the telecommunications sector, the IFT ordered America Movil's Telcel, Telnor and Telmex units to remove customer charges for unlocking smartphones even if they cancel their postpay contract as long as they have been with the operator for at least 6 months.