For many reasons, you might want to reset the Total Call Duration on your Windows Mobile device. And due to the improved security, these numbers are stored at the hardware level in most devices and so even a hard-reset or a ROM Flash will not reset them.
Folks at Microsoft who were brilliant in this forgot to close a way to reset. Here's the dirty trick:
Find how long is your call duration that you want to reset. Example 1 hour.
Make a call, and while on call, open Settings > Clock, change the time back 1 hour.
Funny as it may seem but it worked 100% when I tested in my older Windows Mobile and not sure if it doesn't work on newer devices. Try it and let us known.
Regards,
Carty..
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