My wife's phone lost the ability to sync with the Polar H10 Heart Rate monitor first when she got the update. There was indication that the battery was low. We replaced it with the same results. This was after the her phone got the security update two days ago.
Then I got the update yesterday, and now my phone will not sync either. I unpaired the device and the phone does not even see it.
The equipment and the gym, and my laptop, can both see and pair with the device.
Verizon, or Google, messed up something.
Good time to upgrade to a phone from Motorola I guess. I am done with Verizon phones.