Hello, I'm new here but have been following these posts for a while. I was at the new Kroger in independence today and I lost signal all together on my way there, when I got to Kroger 4G popped up on my phone. It stayed there from Kroger back up 536 towards mt Zion and on my way back home it switched back to 3G. Tonight I went back to upload onto sensorly, but had no 4G. While sitting at home tonight not far from the independence Kroger, my phone is constantly losing service for 15+ minutes at a time. Could this be sprint testing the 4G on the towers.