Sure and Airtel Vodafone are set to merge, if the competition regulators in Guernsey and Jersey give the move the green light.
Sure has done a deal for 100% of Airtel-Vodafone in the Channel Islands.
The merger will reduce customers' choice of three providers to just two - Sure and JT.
But Sure's CEO Alistair Beak says its takeover of a the rival operator will see a multi-million pound investment to create a more resilient and secure network.
" We will continue as the Sure name, as we integrate the Airtel-Vodafone brand into the Sure brand. Will be building a new mobile network as part of the investment.
We will investing up to £48 million on a new network that will include the very latest 5G technology."
He says the company is prepared to make a number of legally-binding promises on pricing.
"Sure will continue to offer unlimited data plans, which are plans that only Sure and Airtel-Vodafone offer today, and we will ensure that Airtel-Vodafone's entry-level plan, which is the best-value and lowest-priced plan on the market today, will continue."
Airtel-Vodafone's team will be integrated into the new merged business.
Police looking for person in connection with Northside Chip Shop damage
Guernsey passengers can book ferries from next Tuesday
Car fires to floods: Guernsey Fire and Rescue attend 24 bad weather incidents
Aurigny takes delivery of fifth ATR
Two Channel Islanders among those allegedly poisoned with methanol in Laos
Disruptive weather conditions cause fallen trees and floods in the Channel Islands
