I have tried all the possible options to radial the last called number on above mentioned BT devices. Is there anyone to help.
What type of phone do you have? You should be able to use Google assistant or Siri and say redial last number.
Google Assistant working perfectly but sometimes it is hard to use while at low 4g/3g coverage areas. In such a case you need the old style double tap on call button that works on most of bt hands-free devices (at least in all other brand devices I used in past). But here it seems no option available.
Try this app it might work for your needs you can program functions. You can get a refund for the app within and hour if it doesn’t preform as expected.
Glad you found a solution.