Joby Griptight in Black or white (tripod adapter for smart phones.
https://www.amazon.co.uk/gp/product/B01MSWAPEU/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=B01MSWAPEU&linkCode=as2&tag=madeonamobile-21&linkId=0964353be27fe5d1c6efd8c54801d86d&th=1
https://www.amazon.co.uk/gp/product/B01N6E0B49/ref=as_li_ss_il?ie=UTF8&th=1&linkCode=li2&tag=madeonamobile-21&linkId=2b5534fe77ff598ae8c45fd3012bb280&language=en_GB