Wow. This takes me back. I had a 48SX way back in the day. We had an entire course focused on using it in college.
Discussion
I have a SX put up. I never used one as it was before my time. I took a class on the 48G and TI-85. I went back and taught one class session on the 48G. I still use one to this day. I recommend iHP48 for the phone. https://apps.apple.com/app/id1549608953
Brilliant. Thanks.