After my Samsung S21 and Tab7 did an update yesterday, when trying to connect via Victron App BT to my CerboGX, the CerboGX BT "locks" connected after pairing, but fails to connect. I have no trouble connecting via IPhone iOS or an Android that hasn't received the recent update. I have to cycle power on the CerboGX to release it and allow BT connections from my iPhone or the older Android.