Nokia Net Monitor description (DCT3)

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How to write number to a specific SIM position?

For some tests it is necessary to enter values as a contact on a certain position of the SIM card (not phone memory!).

  • 30 - Test 38 (MEMORY DUMP). You should write 24-bit address in hexadecimal there (name field)
  • 31 - Test 71 (AUDIO ENHANCEMENT). You should write value 0-65535 there
  • 32 - Test 72 (AUDIO ENHANCEMENT). You should write value 0-65535 there
  • 33 - Test 17 (BTS TEST). You should write channel number (for [GSM 900] 1-124, for [GSM 1800] 512-885) there
  • 34, 35, 36 - Test 52 (reading data from SIM) and Test 53 (writing data to SIM). In entry 34 will be put address of data, 35 its' contents and in 36 info about success/failure of reading/writing

Since Nokia 51xx/61xx and newer phones don't allow choosing the position for the phonebook entry, I want to suggest:
  1. check whether you already have some number stored on this position (using e.g. 33# code for 33 position)
  2. if the phone displays 'Invalid location', you have to add new entries to the phonebook until you hit this position and the phone doesn't display this message (repeating 1st step after each new entry)
  3. after displaying the number, you have to find out who's number is this. You can do it in two ways:

    1. just recall (or check the whole phonebook)
    2. turn off the transmitter in Test 45 and call this number (the name assigned to this number will be show on screen - you will also find it on the 'Last dialed' list)

  4. edit the phone book (this position) - you can change the name or the number
  5. if the phone asks you, whether to replace the old number or to save it on new location, choose the former option

When using Nokia 9210 (probably works on 9110 as well), you can specify the position number of the contact on the SIM card via the communicator using the Contacts application.

Nokia 9210 Contacts


Also, if you have phone from other company (e.g. Siemens), you can insert SIM card to this phone and create contact in correct position. This feature is available on most (but not all) devices of this brand.

Confirmed on Siemens S3 (1994), Siemens C45 (2001), but this is NOT allowed in Siemens C25 (1999).
S3 Mem.No
Siemens S3
C45 Record no.
Siemens C45
On this phones you also can enter <positon># code (e.g. 33#) and go to the list, where each contact displays its position in memory.
S3 List
Siemens S3
C45 List
Siemens C45



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