Here's a code to check your number of calls, call timer & standby timer:

*#92702689#

( *#war0anty# )

I know this one and i tried it on my friend 9500 .But unfortunately it doesn't work on series -60.
Any one know wht's the reason behind this ?

I tried it on a 6600 and it doesn't work like you say...
Wondering also why it doesn't work.

Its probably only a feature on Nokia 9500. I dont think it works on 9210i.

it works on series 40 & the older nokia 3310, 6310, 6210 etc