Since I updated to 8.3, my displayed signal signal strength on my iPhone 6 is lower than it was before in all locations. I am frequently looking at 1 dot when I was seeing 3-4 before. I compared with a friend's iPhone 6 on the same carrier. He's still running 8.1. His phone is in an OtterBox case; mine is in one of the rubber Apple cases. Side by side, his phone had 3 dots, and mine had 1. Is it possible for my radio to have been affected somehow? I would think an update would only change the graphical representation of the same signal strength. Unfortunately, I wasn't able to get his actually signal strength (dBm) at the time, and I don't have enough past information from my other phones to compare. It wouldn't be as big of a deal, but I'v also experienced 3 dropped calls in the past week (normally a very rare occurrence for me). I've already contacted my carrier, and of course they claim they have had no known issues in the area. Has anyone else had this happen?