Hello, For the last two weeks, my phone goes from searching for service, to having a signal, to going back to searching for service. It's default channel is 450, and it keeps bouncing from 450 to 500 constantly. Normally at home it always stayed on channel 450, and sometimes when I dialed out it would switch to another channel. I called Sprint and there are no issues in the area. Friends of mine with sprint arent getting calls and when they dial out, it takes a while to connect. When I dial out it usually takes forever to connect and my phone misses 90% of the calls when people call me, when I call my phone it rings 4 times and goes to voicemail. I'm not sure what the deal is? Any thoughts? My brother lives with me and has a new Katana and his switches channels constantly, too.