How to re-program some chips inside of your Nokia phone.

NETWORK MONITOR

There is a hidden menu inside your Nokia phone. If you want to activate it, you'll have to re-program some chips inside of your phone.

1. Check your software version. You can only continue if you have v4.33, v4.73 or v5.24.
   
   
2. Take apart the phone.
   
   
3. De-solder the EEPROM (ATMEL AT 24C64).
   
   
4. Read out the data with an EEPROM programmer and save it to a file (Backup).
   
   
5. If you have v.33 or v4.73, change the address "03B8" from "00" to "FF".
   
   
6. If you have v5.24 then change the address "0378" from "00" to "FF".
   
   
7. Write the new data to the EEPROM and solder it back to the phone,
   
   
8. Power on your phone and you should have "Netmonitor" enabled.

The Network Monitor gives you the following information.

• Carrier number
• MS RX Level in DBM
• Received signal quality
• MS TX power level
• C1 (Path loss criterion, used for cell selection and reselection). The range is -99 to 99.
• RTL (Radio link timeout).
• Timeslot
• Indication of the transmitter status
• Information on the Network parameters.
• TMSI (Temporary Mobile Subscriber Identity).
• Cell identification (Cell ID, Number of cells being used).
• MCC (Mobile country code)
• MCN (Mobile network code)
• LAC (Location area code)
• Ciphering (On/Off)
• Hopping (On/Off)
• DTX (On/Off)
• Discard cell barred information