Tips and Most essential Secret Codes for Nokia 3210

Unlock your Nokia
To unlock your Nokia phone you will need some of the following:

1. Data Cable
2. Unlock Software
3. Extra Help + help Guides

*#06# for checking the IMEI (International Mobile Equipment Identity)
*#0000# shows the SW version.
*#3370# - Enhanced Full Rate Codec (EFR) activation. It will automatically restart.
*#3370* - Enhanced Full Rate Codec (EFR) deactivation. It will automatically restart.
*#4720# - Half Rate Codec activation. It will automatically restart
*#4720* - Half Rate Codec deactivation. It will automatically restart
*#746025625# - Sim clock allowed status.
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 (Algebraic Code 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. - Will give you 30% longer talk-time.
Sim Clock Stop : *#746025625# apparently only works for 3 minutes.
*#92702689# - takes you to a secret menu with 6 choices

• show the serial Number
• Shows when the cell phone was made mmyy
• shows when the cell. Phone was purchased mmyy
• shows how many times the cell. Phone has been repaired.
• Makes u capable of transferring user data if u have the gear for it
• shows how many hours the phone has been on