For some reasons, you maybe needing your mobile unit. A friend, textmate or whoever would be asking for it.
Today, there is still a number of people who find it hard to manage in knowing their phones model. If you are one of them and is a nokia user, you landed the right tutorial.
In standby menu, just dial on *#0000#– those are four(4) zeros.
A pop-up will then appear, showing in the top your phone model. There are also other essential information there like, date manufactured and version of your mobile device software.