Betty,
Don't worry about it too much. I don't have a smart phone. Mine's stupid and old. All it does is make phone calls and do texts.
I use a digital camera and download the pics to my PC. No laptops, no tablets, none of them new fangled things.
Here is the page on ISMACS for the 201s {
http://ismacs.net/singer_sewing_mach...-machines.html }.
They actually have a "K" model shown in there.
Joe