JavaCard: how to download to SIM?

Question

mobile connection

I must say right away that it is What is on board modern SIM cards? was reading.
I need to develop an applet, and we will upload it together with the operator or the manufacturer of SIM cards.
Suppose how do I develop and debug it?

Answer 1

Despite your answers in the comments, I do not understand the essence of the question.
Check with the card manufacturer for the version. Check if he is ready to provide you with an SDK.
Part of the documentation is available here
You are not a member of the GlobalPlatform association, then only part of the documentation, the rest you need to either buy from them or ask the manufacturer.
Once you have the right amount of specs and a (not the cheapest) SDK, develop.
Do you know how to write in Java?

Answer 2

Where is the question?