Does social media contribute to a more isolated society?

https://www.theguardian.com/business/2019/jan/05/britons-hang-up-landline-call-volumes-halve :
>“Calling someone is a bit daunting,” said one 18-year-old respondent in a survey on phone habits conducted by Ofcom. “It’s much easier and quicker to WhatsApp my friends. If I have to call a company, I’ll always try to use webchat if it’s available.”