How many times you have mis-placed your smart-phone and you try to call the number and hear the sound coming from to retrieve it. What if the smart-phone is set to silent mode or low volume at the point you mis-place?



How many times you have mis-placed your smart-phone and you try to call the number and hear the sound coming from to retrieve it. What if the smart-phone is set to silent mode or low volume at the point you mis-place?


