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

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** Example 1 **

   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]

** Example 2 **
[JM] 3/23/2019 - [SerPortChat] works on [Androwish] with the following minor changes:<<br>>

   1. I used dummy icons instead of the original png files
   1. changed a few lines: