Nokia 6110 Secrets

*#06# - Check the IMEI (International Mobile Equipment Identity)

*#0000# or try *#6110# - Check the phones software (SW) - called firmware revision information.

*#746025625# - On SW-Version 5.24 (only this version) you can check if the Sim-Clock can be Stopped with this code. (Sim-clock-stop is a kind of standby mode which will save battery time)

*#92702689# - Phone asks for Warranty code
Press the following warranty code:

6232 (OK) : Displays the Month and Year of Manufacture
7332 (OK) : Displays the date of the last repairment
7832 (OK) : Displays the date where the phone was purchased
9268 (OK) : Displays Serial Number
37832 (OK) : Set the Purchasing Date MMYY (Warning: You can only do this once - So be careful ...)
87267 (OK) : Transfers ALL phone numbers, pictures, sounds from one phone to another

Enhanced Full Rate Codec (EFR):
On: Enter *3370# and EFR will be activated after a reboot of the phone ( consumes more power )
Off: Enter #3370# and EFR will be switched off after a reboot of the phone.

Half Rate Codec:
On: Enter *4720# and Half Rate coded will be activated after a reboot of the phone ( better standby time )
Off: Enter #4720# and Half Rate coded will be de-activated after a reboot of the phone
Enhanced Full Rate will give you much better sound quality when you enable it. The new Enhanced Full Rate CODEC adopted by GSM uses the ASELP (AlgebraicCode Excitation Linear Prediction) compression technology. This technology allows for much great voice quality in the same number of bits as the older Full Rate CODEC. The older technology was called LPC-RPE (Linear Prediction Coding with Regular Pulse Excitation). Both operate at 13 kilobits.(but you take up more space on the network, so they can charge you more) - Talk-time is reduced with about 5%

Half Rate will give you bad sound quality, which gives the service provider the opportunity to have more calls on the network, and you might get a lower charge from them. It will also give you 30% longer talk-time.

FREE CALLS??
NOTE: The tips needs Net Monitor enabled.
Be aware that the trick will remove Netmonitor in some SW versions like v4.73, v5.04 and v5.24.

1 Launch the NetMonitor in your Nokia 51xx / 61xx
2 Execute the test number 497
3 Free calling for about 90 sec should now have been activated.