Analysis of Smartphones
They allow people to stay in touch, even over long distances, and they are relatively safe and reliable to use. There are devices that can communicate with plus at the other end of the planet and getting and keeping in touch with other people is very easy.
The disadvantages to this is that it means people no longer need to meet in person as much, and interpersonal relationships are suffering worldwide because people are communicating through a small handheld device. Lots of people have Smartphones and they use them almost semi-continuously, including in public settings when they could be making new friends, finding new lovers, and talking/interacting with their current friends.