Basicaly the need of the 24c16 was because of the 5 giant Tables of the A3A8 Algorithm. The biggest Table (Table 0) is 4Kbit long! Tables 1,2,3,4 are 2Kbit, 1Kbit, 512bits, 256bits long.

The 24c16 contains 8 pages, each 2Kbit long (256 bytes)
The ISO card command syntaxes: 

Reading Page 0 - 7	.
A0 BB 00 00 00     RFF R01	BB is an Instruction defined by me (not a GSM inst.) for reading the content of the 24c16 eeprom. This command syntax will read PAGE 0 of the eeprom which is FF+1 bytes (hex) = 256 bytes long. P1 defines the page number.
A0 BB 01 00 00     RFF R01 A0 BB 02 00 00     RFF R01 A0 BB 03 00 00     RFF R01 A0 BB 04 00 00     RFF R01 A0 BB 05 00 00     RFF R01 A0 BB 06 00 00     RFF R01 A0 BB 07 00 00     RFF R01	That should read all the eeprom content (8 pages, 0-7). If P1 = 1 then read Page 1 If P1 = 7 then read Page 7... Got it? Note: R is for Receive. See Example!
Writing 1 - 10 bytes	.
A0 AA 00 00 01     R01 81 R02	Instruction AA is writing 1 till 10 (hex) =16 bytes in the EEprom. P1 defines the Page number. P2 defines the Address in the Page. LEN defines the number of bytes to be written. In this example, one byte 81 will be written in PAGE 0, Address 0. (The first location in the EEprom)
A0 AA 01 30 02     R01 88 88 R02	Here two bytes 88 88 will be written in Page 1 at Address 30, 31 R01 is the BYTE RETURN (AA) R02 are the STATUS BYTES (90 00) if successful. See Example!

SIM-PIC V1.0 (dos hex generator for the Pic16x84 and White Wafer)
Short description and info: simpic10.html
 

Sim-Pic was made by myself for myself and works fine with the Hardware/Software that I have. I don't guaranty that it will work on all the phone models, after all I don't profit from it and just wanted to share my toys with you. If happens that with the help of Sim-Pic you send to your phone some funny bytes, telling your phone 'Go in self-destruct mode', don't send me an E-mail with the subject: It's your fault. But if successful, E-mails are welcome :-)

Thanks to everyone who helped. (Janus, Rick, Goran, Antonio...)
Legal stuff: the SIM-PIC won't help anybody to make free phone call, it's basically doing the same thing like the ASIM on Janus page, not with a PC but with a Pic card. 
Those with original Sims can maximum build clones of their own Sims, those without can
experiment with FF FFs so they can maximum get the menu of the phone working but not logged in the Center.

Final word: if you are not familiar to bits and cards, it's not recommended to use any of what I mentioned above. You might finish with burnt I/O card (programming Pics) or locked SIM ('I thought it was the Pic-card!!') or waste of time. I'm not responsible of any damage you might cause!!!