Mobile Devices vs. World Population
We live in a mobile world. There are more active cell phones in the world than there are people. The average person interacts with their personal device well over 200 times per day. People are never separated from their phone, and phones have become the primary way that people connect and interact with each other.
As for evangelism, the development of mobile technology is the most significant event since the invention of the printing press. Recent world events have caused many people to question their cultural religion. People are actively seeking truth, and they are doing so on their cell phones.