When using the factory messaging app, I tap the microphone at the bottom to use the voice to text, and a new "microphone window" pops up. When I'm finished texting if I don't close the "microphone window" it will freeze on the screen blocking the bottom potion of the screen. You cannot close the window when this happens. Everything works behind the microphone window, but it blocks the bottom of the screen. The only way to clear the microphone window off the screen is to reset the phone. I have performed the factory reset, and even replaced the phone under warranty. Please help.