I just wanted to confirm.
Pysim is a bit of an adventure to get working, but once you do, everything is fairly straight forward.
I just do all of the commands through the command line.
I have been using pysim to read/write both sims and usims.
Both of which I have connected to Yatebts and made real world phone calls with.
Fair warning though, I have had to work my way though many card readers.
The only card reader that I have that will read/write all my different sims is the Hid Omnikey 3121.
I have looked around and I do not know of any alternatives to using pysim.
If anyone knows of one, please let me know.
Thank you