How to Avoid Cell Phone Spam

Recently I've noticed a definite upswing in the number of unsolicited commercial phone calls I get on my cell phone. What to do?

I found a simple may to minimize (or at least reduce) the annoyance. My phone uses mp3 files for custom ringtones, and is able to receive such files via email. So I

• edited a silent and extremely short mp3 file


• sent it to my phone


• saved the annoying caller as a contact, and


• set the custom ringtone for that contact to the silent file

It requires a little overhead in defining the contact, but now it means that I am no longer bothered by that caller again.