Nokia 61XX Secret Codes
Software Version *#0000#
1st Line - Software Version
2nd Line - Date of Software release
3rd Line - Phone Type.
Nokia 61XX Secret Codes
Serial Number *#92702689#
1st Screen - Date of phone manufacture
2nd Screen - Serial #, IMEI
3rd Screen - Purchasing date
4th Screen - Last Repair Date.
Nokia 61XX Secret Codes
Enhanced Full Rate Mode
*3370# to activate Enhanced Full Rate Mode
[Call quality increases, battery life decreases!]
#3370# to deactivate Enhanced Full Rate Mode
Nokia 61XX Secret Codes
*4720# Activates Half Rate Mode over GSM (older versions of Nokia
61xx firmware only).
Nokia 61XX Secret Codes
Call quality drops, but increases battery life by about 30%...also
network dependent
Nokia 61XX Secret Codes
#4720# De-activates Half Rate Mode over GSM (older versions of Nokia
61xx firmware only).
Nokia 61XX Secret Codes
IMEI number *#06#
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