Checking life timer...
 

how to do it on a 9000?

(also for a 8900)

You want to use the timer? Then go to the clock application and click menu > timer.

If you want the total time of phone calls: Green (Phone/dial) button->Menu->Status. It will give you the time for the last call, and total time. I don't know how far back the total time goes, however.

sorry for not being specific but the overall timing on the phone

I don't think that is possible. I mean if you keep your phone on the whole day, you could take how many days you have had it multiplied by 24. Other than that, don't think it is possible.

There is no call life timer as there is in traditional cellphones.

"shift + alt + h "
 

wow ... this "shift + alt + h " is quite handy. Thanks for sharing !

but the uptime here =/= life timer that zeeshan66 asked for.

Additionally if you want to see the non resettable life timer to determine data and phone usage you can access this by selecting > options > status from within the status screen type "BUYR".

If your phone was used more than 60 mins it will only say exceeds 60 mns and the cap on data is 250K.

Hope this helps