iPhone 6 Plus installed iOS8.1.2 and seeing a thin blue rectangle appear on display. Manifests itself in two ways: (1) When come out of a black locked screen a one inch wide transparent light blue line from top to bottom of display starts at left side and moves to right side, similar to a scan taking place, usually only happens one time while screen is active, does not always happen, does not happen again during active session until again come out of black locked screen. (2) While screen is active displays a rectangular block with thin blue line (has no blue fill), rectangle surrounds the top group of four icon groups and then slowly starts making its way down the screen stopping at each icon group then starts again at the top to repeat without stopping. Depending on what screen or app is active the rectangular box with thin blue line displays and slowly makes it way to and outlining each data input and display position on the screen and then starts again on same screen to repeat without stopping. Initially tried rebooting and hard rebooting no resolution. Restored iPhone to factory configuration iOS8.1.2 then elected to restore last backup and problem still happening. I am not sure it is so much a hardware failure as iOS8.1.2 has issue with graphics display software/firmware/hardware or offending installed app. Looking for an iOS8.1.3 update to resolve instead of visiting Apple store for a replacement phone.