When I opened the Mimo app on my Galaxy S10e this morning it said there was a firmware update, so I downloaded and installed the update. Since the update, the record button does not work reliably and the Mimo app loses its connection to the Osmo 3 Mobile periodically.

I'm having the same issue. I am using Samsung Galaxy S10+ and it's listed in the compatibility chart DJI provides. It's really a shame. The hardware is amazing; but the Mimo app is garbage as is and needs an immediate update. Hope DJI figures this out very soon or lots of units will be returned. Not good for DJI's reputation.

Looking forward to hearing from DJI.