I have taken interest in the Sprint plans that have no roaming with the use of a tri-mode phone that can force roaming. I had the opportunity to play with two sprint phones last night. In Mankato, MN they both were operating on sprint SID 4155. I selected the force roam and they operated on midwest wireless SID 1372, with great reception. In our rural area, keeping a strong and/or usable sprint signal can be difficult. However, using midwest wireless, or another carrier in other rural areas usually will have great signal results. SO...if one uses a sprint plan with no roaming, and gets a tri/quad mode phone and keeps it on forced roaming, will it always be able to use the other carrier free of charge? If so, what a good deal for our rural areas! And then when in an area of good sprint signal, take advantage of it. Will the phones stay on forced roam until switched off? Will sprint eventually send a letter not allowing the customer to continually do this? Thank you.