It is possible that someone use the Call blocking feature on his Android SmartPhone to block your calls. Sometimes the person add your number in block list mistakely.

Call the Person that You Think He Has Blocked Your Number Pick up your Android SmartPhone and make a call to the person’s mobile number who you believe has blocked your phone number on his Android Phone.

Busy Tone Every Time When you calling from your phone you will get busy tone every time on any number (Do not judge in single call) that means he blocked you via simple call block.

Team Andrimo

Author of Andrimo, A Offical Publisher of Andrimo. Publish Article on Weekly Basis