How to transfer an active call in (stock) Android Nougat phone app?

[FlyingHotPot]

I am completely lost trying to google this information. There are thousands of how to "redirect" or "forward" calls but only a few about how to "transfer" an active call to another contact, which are for specific older smartphones.

What I want to do:
I am getting a call from contact A, I put A on hold, dial the number of contact B and then "transfer" the call from A to B.
It's not a conference call. I want to be able to end the call after connecting A to B without ending their connection.

I am using a Oneplus 3T running Anroid Nougat right now and I cant figure out how to do this. The only option I have when juggling 2 calls simultanously is conference call.

On any of my Samsung devices (old and new), this was no problem at all. The option is called "transfer".

Is that some special feature of the Samsung Anroid OS and simply not available in other Android variations?

Thanks for any help in advance!

 

[B. Diddy]

Welcome to Android Central! I've never seen that option on any of my (non-Samsung) phones, so it's most likely a modification made by the manufacturer. From a quick Google search, I could only find one other manufacturer (3CX, not well-known in the US) that also has this feature documented.

 

[FlyingHotPot]

Thank you very much for the confirmation.
It's so weird that this option is not standard because I still know it from old Nokia brick phones. Wish there was an app for that!