Was going through the setup after activation. The display was crisp and clear - beautiful. Activated email, then the next step said if my old phone was Android, unlock it and hold it back to back with the new phone until it beeps. My old phone was a Droid Razr Maxx & the new is Galaxy S6. It didn't beep, but the new phone's display started doing strange things - grayish full screen flash, other times about the bottom 2/3 of the top half of the screen would flash with a blue & green stripe. I can't get the phone to do anything...shut off, show a display, anything... What do I do?