Most people replace their phones every couple of years, but not David Klein, he's had his phone for five years, it's travelled with him around the world, moved countries and been a huge part of his life. The secret? David has a 'dumb phone'.

David Klein is a science storyteller. He won best newcomer in the 2015 New Zealand Fringe Festival for his show 'Towards a Better Understanding of the Universe' and will be touring New Zealand at the end of the year.