the pause method added to MediaRecorder in api 24
is there any way to use this in a older api?
here is android studio suggest but i want use it in older devices
Simple answer for your question is NO YOU CAN'T
Once you are recording the only possible actions are stop and reset.
So try to save your Call to SDCard after you Stop , and then again start Fresh Record and Stop it. Finally Combine both Audio File into one Audio file.
Record the audio as .wav file and Combine using this way.