[JM] 3/19/2019 The following worked for me on a Lenovo Yoga Tab 3, running [Androwish]


   1. USB OTG connector
   1. USB to DB9 converter (Prolific)
   1. US Robotics 5686 external modem (I have one, believe it or not)
   1. Code from "Basic Example" from [Serial Port] with 1 change only:

 set dev [lindex [usbserial] 0]
 set fh [usbserial $dev]

Instead of:

 set fh [open $comPort RDWR]

Screenshot:

[Androwish Serial Port screenshot]