Apple has responded to a problem with discolored Apple Watch displays by ordering retail locations to send the affected devices in for replacement, 9to5Mac reports. The issue seems to be affecting just the GPS-only Apple Watch Series 3 models so far, with the device showing small lines around the edge of the screen that become more obvious when it’s turned off. The problem isn’t widespread, but Apple has told Apple Store employees and third-party repair locations to mail devices in for complete replacements rather than attempting repairs.