This is something that can be done, if the watch is rooted . "So far " I’ve not succeeded, Rome was not built in a day 
I would recommend keep searching the forum and there seems to be some decent, knowledgeable people here. Another thing to consider is: Google . Because Android 7.1 is one of the last builds that Google allows certain apps to run on (without being a Google certified device ) this plays into a lot of things . Both the Ticwris and LEMFO LEMT are actually decent devices and despite not being able to root mine I’ve found a whole bunch of stuff this thing can do and have even made some adjustment’s , that I might actually use this as my phone now .
Just search around , you will find a work around .