By the age of 14 the average child will have sent more than 35,000 texts, 30,000 WhatsApp messages and racked up more than three solid weeks of video chat, a new study has revealed. The modern youngster will also have spent the equivalent of six months looking at their phone during that period, averaging 135 minutes’ use a day. The survey of 1,000 kids aged 8-14 and their parents, also found young people spend over an hour a day browsing social media sites like Facebook, Snapchat and Instagram It also emerged they expect to receive a reply to a message within 15 minutes.