Bluetooth connectivity issues after update to iOS 15.0.2
Since updating iPhone 12 Pro to iOS 15.0.2, have constant issues connecting or staying connected to bluetooth devices. Sometimes device cannot be found. When it finally appears, it remembers pairing and connects, but seconds later it is disconnected. Devices I try to pair with say "cannot find (iPhone) device". Happens with Bose speaker, Dell Mobile Connect, Plantronics headset. Have tried turning bluetooth on/off, phone hard restart, devices hard restart, forget pairing and re-pair. None of above solutions resolve problem. Any suggestions (other than factory reset)?
iPhone 12 Pro