Communication is a two way thing, speaking and listening. For us to have really conversed with a person we must have talked to and listened to them. And social Media makes it impossible to have hard communications with people. The ability for someone to ignore a text for two days and reply whenever we want is one of the downsides of social media
Remember that communication consists of both verbal and nonverbal components, therefore in the case of someone not responding to a text message, that is already communication on its own(perhaps indicating loss of interest), just the same way that someone can ignore you physically during a convasation. These can be classified as non verbal communication.
Therefore in my opinion I believe technology has helped us tremendously in both in socializing and communicating.
Thanks @ogochukwu