Just recently, every time I start up my Osmo mobile 3, and then launch the iPhone app, I get a message saying it can't connect and I have to re-pair the device. This happens almost every time. I'm trying to figure out why it the iPhone app doesn't  recognize the device When I to turn it on.

Hello there. I am sorry to know that you are having issues with your DJI Osmo Mobile 3. May we know what is the exact model of your iPhone and have you tried uninstalling and reinstalling the DJI Mimo application to see if the issue will be fixed? Keep us posted on the said issue for further assistance. Thank you.