I have rbk753, when I moving between satellite and router, my iphone will lost connect

Hi Darren, I'm sorry you are afflicted with the same problem as me.  Years and various firmware updates and factory resets later, I am still having the same problem.  Unfortunately, turning off MAC address randomization did not help and it's not only with my iPhone but it's with other wi-fi devices as well.  The only solution for me was to give up on the wired backhaul and use the slower 5 GHz wireless backhaul, which results in zero connectivity issues.