Hi I am now on my third 6S plus, due to factory defects. The first, a silver, was returned to the Apple Store. due to a defective Sim and Sim tray. The second, a gold, died this morning and could not be rebooted. Yet did manage to reboot after three hours. I am now on my third phone (Silver). I noticed that the white background, as I type this, is slightly warmer. In fact there was some variability between all three phones with regard to "white". There are no dead pixels. I'm getting tired of returning phones. There is nothing else wrong that I can see so far. Is a slightly warm white, reason to return a phone? Could I be sure the next phone would be better? Thanks in Advance.