How to get and reset the life timer information of your S60 phone
A life timer records the total talk time (summary of the outgoing calls) since the beginning of the phone functioning. With life timer you can see if the mobile you are buying is really new. Also this timer helps to identify your device when it is lost in some cases.
By “dialing” the code *#war0anty# (means *#92702689#) on the phone standby display, the phone will show the life timer in hours and minutes.
It is very hard to reset the life timer as it is meant to show the mobile’s lifetime. If you reset call logs, the life timer will not reset. It cannot also be reset using phone formatting or a firmware update. Life timer can be reset only using special software, which is mostly not available publicly.