Okay, first of all Sprint has the national 1900/PCS CDMA licencse. Therefore, all they have to do is build a 1900 tower where ever they please. Therefore lowering their costs because the licencese is nationwide. Where as if they started to build out with 800, they would have swap licensces with other carriers, and setup an 800 infastructure as well - which is way to costly when everything is setup for 1900 (with exception of Roaming Like Native agreements that they have with ACS in Alaska, and Alltel in Montana/Wyoming; but there they don't maintain the towers, Alltel does). Also it is impossible to get new 800 licensces because the FCC is only giving out 1900 ones now - its been this way for a while. Also even if they wanted native 800 coverage, they could not get it because the only way to gain 800 now-a-days it to do a licencse swap. But Sprint can not do such a swap because their only liscencse if for the whole nation, and its at 1900. Sprint also migh have trouble purchasing a 800 block, because its 1900 licencse it national - and the FCC regulates that carriers can not have overlapping licensces; therefore this would never work because their 1900 lisesce is national. But... the thing that Sprint has decided to do instead of building their own towers out in Montana/Alaska/Wyoming is that they pay Alltel for Sprint customers to use the Alltel towers as native service. In return Sprint can not sell or offer service in these areas; but their customers can use the Alltel network as native service. Another nice thing is Sprint does not have to maintain these areas, Alltel (or ACS) does the maitenence. Hope this helps explain it a little better. Any questions just ask. SYNOPSIS: Sprint has national 1900/PCS licencse - FCC does not give out 800 licencses anymore - FCC says Sprints national 1900 licencse would overlap any 800 licencse they bought - Lisencse swap would not be in the question; because you can not swap a national lisensce for a regional one - Sprint has a 'Roaming As Native' agreement with Alltel in Montana/Wyoming and ACS in Alaska; which allows customers to use those areas/networks as native home service; although the equipment (towers, switches, etc) is owned by Alltel (or ACS).