To know if someone has blocked your phone number, the only thing you'll need is the phone with which that number is associated. However, it can help to have a separate phone, for a reason we'll get to ...

If you send someone a text message or iMessage and they don't respond ... Your texts may be blocked if you don't see any ...

There are few big mysteries in the information age, but one of them is knowing how to figure out whether someone has blocked ...