Usually I have full 3G at my house. The last few weeks I keep losing 3G then it will finally come back. Right now I watched go from 3G 5 bars, to 4 3 2 1 0 then back to 4. It keeps going up and down. Now it switched 4 blue bars, 5 1x white bars, blue 1x bars, white 3G,and back to full blue 3G. It is like my phone is cycling through every service option. What is going on????