OnePlus 3 update does more harm than good
For example, OnePlus 3 users who have installed the update are now saying that it prevents Android Pay from working. Additionally, the front-facing camera's auto focus remains broken, and Doze continues to break notifications; since the August security patch is not part of the update, the Quadrooter vulnerabilities remain a possible threat to OnePlus 3 users.
One issue that more than one user has been complaining about is the phone's propensity to drop from a 4G LTE signal to a 3G and then a 2G signal rather quickly. There is a solution. You can lock in an LTE signal on your phone by opening the dialer, tapping on *#*#4636#*#* and opening Phone Information. Click on Preferred network type and select LTE only. This workaround isn't helping everyone, so hopefully another update will soon be on the way.