Don't laugh, I'm a phone Luddite - even a simple phone. I bought a basic Kempler & Strauss 2.4 phone at an OXXO. A kind woman helped me with a SIM card and set the phone up for me in Saltillo. I can't find any instructions or a manual online and can't figure out how to use the darned phone - like how to make a call. That was a year ago and I'm getting ready for another trip in Mexico and would like to know how to use it - just for emergency calls.
Here in the US I have a flip phone and can use it, but this Kempler & Strauss doesn't even have a red and green send / end button.

Can anyone find any information online and help?