FYI - We are returning our second Fire 4k stick. We bought the first Fire 4k stick a month ago, and immediately had weird glitches. I attempted to return the stick, and was directed to Chat instead of the usual return sequence. Amazon sent a new stick and told me to not return the first stick, but “do what I wanted” with the old one, which I thought was odd. The new stick caused the picture to become dim, and we have asked for a refund. This time there was no chat option, but we were directed to call or email. In the past we owned the original model fire stick, and then the box. We had no problems, but wanted to upgrade.