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README: rephrase initial section; add HPSIM; programmable vs. standard 

Change-Id: Ied7bce9fc4ebc9a71093ac41d9c1b8e67fe04d7e
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Harald Welte 2023-06-08 21:43:09 +02:00
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pySim - Read, Write and Browse Programmable SIM/USIM Cards
====================================================
pySim - Read, Write and Browse Programmable SIM/USIM/ISIM/HPSIM Cards
=====================================================================
This repository contains Python programs that can be used
to read, program (write) and browse certain fields/parameters on so-called programmable
SIM/USIM cards.
This repository contains a number of Python programs that can be used
to read, program (write) and browse all fields/parameters/files on
SIM/USIM/ISIM/HPSIM cards used in 3GPP cellular networks from 2G to 5G.
Such SIM/USIM cards are special cards, which - unlike those issued by
regular commercial operators - come with the kind of keys that allow you
to write the files/fields that normally only an operator can program.
Note that the access control configuration of normal production cards
issue by operators will restrict significantly which files a normal
user can read, and particularly write to.
The full functionality of pySim hence can only be used with on so-called
programmable SIM/USIM/ISIM/HPSIM cards.
Such SIM/USIM/ISIM/HPSIM cards are special cards, which - unlike those
issued by regular commercial operators - come with the kind of keys that
allow you to write the files/fields that normally only an operator can
program.
This is useful particularly if you are running your own cellular
network, and want to issue your own SIM/USIM cards for that network.
network, and want to configure your own SIM/USIM/ISIM/HPSIM cards for
that network.
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