Did you mean Total Call Timer? If yes, try the code *#22558463# (*#CALLTIME#). I'm not sure if it works on all models.
You can still check for the Device Usage Counter by using 'Phone INFO ★Samsung★' app, in the USAGE HISTORY section. These counters include Headser Connect counter, Charger Connect counter and S-Pen Detach counter.
Download link in my signature.
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