My Verizon Galaxy S9+ was updated yesterday morning to G965USQS2ARF4 and yesterday started rebooting when wifi disconnected (had a power outage). It was recreated if I turned wifi off and on. Today I did a factory reset and it seemed to be OK but a few hours later it started doing it again. I restarted while in Safe Mode and was still able to recreate so it's not an issue with an app. I found online an article from another user having the same so it may not be an isolated issue. The article said if these did not work it may be a hardware issue. What is the next step?