Make call remotely from one phone through bluetooth using other phone? I have two mobile phones:


Samsung Galaxy S3 i9305 with SIM card
Samsung Galaxy Note 3 N9005


I would like to  


connect them with Bluetooth, 
start my phone calls from Samsung Galaxy Note 3 remotely through Bluetooth, 
the voice should go through Bluetooth to Samsung Galaxy S3, using its SIM card to make the phone call. 


There is a remote Bluetooth sim solution named rSAP (Bluetooth Remote SIM Access Profile), which is used to remotely connect to car mobile.

http://www.android-rsap.com/bluetooth-sim-access-profile.html

But the developer of the app said, it will not work for the task I need:


  I don't think you will find a solution for your use case. It may be
  possible to do it by using the "Handsfree" Bluetooth profile but I
  doubt that the Android programming interfaces make a Handsfree client
  possible. You will most probably have to create your own Android
  firmware, e.g. based on LineageOS.


Is this possible to solve in some other way?
I'm also trying to achieve a similar task with two handsets.
I use unlimited data as my primary home internet. (trying to save money going without broadband) but to do this I have to USB tether my phone (Pixel 3) to my home network.

I want to instead use my old Android handset (Galaxy s3 mini) USB tethered to my home network and bluetooth remote SIM access from my Pixel 3 to act as a virtual 3G modem.

Currently I have to either swap out the SIM card or just leave my Pixel plugged in by a window with good signal.