Got the 13.1.3 update and all seemed copacetic... for a few days. Now back with syncing problems, Fitbit/bluetooth issues, wifi. Wifi shows connected in Settings, but not the bar at top. Trying to monitor whether data or wifi is being used. Did the prelim resets, reboots, but alas, looks like when I have the time, will have to get serious and take the effort to research, forget, uninstall, reinstall, reset, reboot and do it all over again. Hoping that all will magically kick back in gear, but until it or I fix it, will have to use Samsung tablet to sync and connect. What a drag.
The gods were with me because the iPhone 'magically kicked back into gear' after only one more, maybe two, reboots. Not sure if it was a prob with the network(s), but don't think so, since phone was the only one acting wonky.
Android tablet was fine. In fact, I had to sync Fitbit through app on Samsung or computer and then update the info on iPhone through wifi connection.
I read some complaints emerging about 13.1.3 included connectivity issues. And again, this last update addresses BT problems with audio and/or carplay connections. However, my speaker and earbuds paired and operated seamlessly, but not Fitbit.
@Frozenoem, thanks for the handy-dandy tips. I did try most of the steps mentioned the first time my Fitbits went MIA. I finally found the solution that worked at the Fitbit community which was basically a concerted conglomeration of said steps. One thing I learned or figured out is turn off any BT on any other devices in the area. Turned off Android tablet and things started happening for the better. I guess iPhone/iPad doesn't play well with competing BTs (which is not necessarily a bad thing, just can be a PITA). Once FBit was up and humming again, I turned Android BT back on and all was fine until the latest hiccup. For now, it seems to have found its groove again on its own *knocking on wood* and I'm not questioning or messing with it.
It's times like these I keep telling myself technology is a good thing. How else could I tell how much REM sleep I'm getting?