Nokia 8810 Secrets

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

*#8110# - Check the phones software (SW) - called firmware revision information.

*#746025625# - To check if the Sim-Clock can be Stopped
(Sim-clock-stop is a kind of standby mode which will save battery time) This code doesn't work on SW version 4.59.

*#92702689# - 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.

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%