I like to use the signal status style as text so I know exactly what my signal strength is. When I set this after a reboot am getting system ui crashed. To set this go to settings > status bar > signal status style > and select text. Reboot and see if you are getting an error. The lower the number the better your signal is 80 is really good and 115 is where a call would drop. This setting worked fine until I updated to the latest update.
Yeah I'm not saying you don't get good speeds, I'm just saying that -80dBm isn't considered to be very good strength, especially when it's the halfway point of the signal strengths I've encountered (-51dBm to -115dBm).
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