Some means of holding your smartphone is essential if you’re shooting video. It makes it easier for you to keep the shot steady and reduces the risk of dropping your phone. A phone holder I wouldn’t be without is the Charger City pistol grip.
Robust, simple in operation and relatively cheap, the Charger City doubles as a table top tripod and always has a place in my kit bag.
Costing around £16 the Charger City is available from my Amazon store