I'm looking into going with a new cell phone service company. At this time I have "Nextel" that just hooked up with "sprint" not too long ago. I live in "San Jose,Ca" "The bay area" At times I go to casino's Like "Cache Ceek" ,"Table Mountain","Jacksonville" and a couple others, and everyone of them casino's are all in same state of Ca., and I get no service. I Have a couple children that are watched by my sister and in case that person needs to get a hold of me, or an emergency comes up ther is no way in getting in contact with me. I see many others that have no problems in their strength with signal. Does anyone know what service company is best strength in signals and less dropped calls? If possable with the nation wide Walkie talkie service, (Doesn't have to be, But by chance) Thank you for your time and advice...