We live in an era of smart devices and Internet. Everybody who wants to have a communication device in their pocket, has it there.
In addition to cellular connection, there are a lot of messengers which can be used to send texts, smileys, pictures, videos, links and perform voice and video calls.
In past times there was a problem: “how to reach a person?” And everyone dreamed about personal pocket device with the Internet connection. But now there is another problem: “How to escape from intrusive people, their calls and messages?”