The purpose is often simply to quickly identify the source of the call, if possible, to determine if it's spam and worth blocking directly through the device.
Other
Recent comments:
1
Jul 14, 2016
Called no answer
Other
2
Jul 15, 2016
This number keeps spamming my phone with calls on a daily basis
Other
3
Jul 20, 2016
Please take me off your call list
SMS
4
Jul 20, 2016
Why do you think posting your request on a website to identify unknown phone numbers will have any results? Do you think your caller watches this site and will know who you are when they see your post and will stop calling you? Just invest in a call blocker.
Other
5
Jul 28, 2016
The purpose is often simply to quickly identify the source of the call, if possible, to determine if it's spam and worth blocking directly through the device.