The number of teens who voice call on their phones every day dropped 50% between 2009 and 2012. Just 3% of UK Millennials now use the function daily. With texts, iMessage and WhatsApp becoming the preferred method of communication, can audio message app Cord get us talking again?

"It's kind of awkward to leave voicemails now," says 22-year-old college graduate Chris Paul. His sentiments are echoed by his generation, with research showing that voicemail use dropped 8% between October 2013 and April 2014, as texting becomes the dominant communication method.

Young parents in America not only work more hours than their parents did, but they work longer days than any other country, leaving less time to spend with their kids. Toymail offers a new channel of communication for parents to stay in touch with their children.

Smartphones are no longer just a means of communicating. They wake us up, get us from A to B and even help us find love. We’ve almost forgotten their original purpose. Text trumps voicecalls and apps trump SMS – it’s a good time to ask – what’s the future of the mobile phone?