IS there any technical reason why they are using 2 frequencies? I wasn't aware of any other operator doing this?
The infamous 3G licence bidding that raked in billions for the British Government included more than one frequency for some of the licences that were up for grabs.
Vodafone purchased the 'B' Licence which was the most expensive available for an existing mobile operator.
Licence A: Three (Hutchinson 3G, TIW) £4,384,700,000
Licence B: Vodafone £5,964,000,000
Licence C: O2 (Cellnet) £4,030,100,000
Licence D: T-Mobile (One2One) £4,003,600,000
Licence E: Orange £4,095,000,000