Some business travelers suspect that hotels use illegal cell phone jammers to encourage guests to use their expensive hotel phones: It appears difficult to prove whether hotels are using such jammers but the companies selling the jammers are staying in business and they say they're selling to hotels. In the past, before my employers paid for my cell phone, I always used calling cards in hotels to avoid the exorbitant phone charges. If hotels are making it difficult for guests to use their cell phones in their rooms, perhaps business travelers will have to start using cell phones where they work and calling cards in rooms.
