The design team at Facebook has just released another great free resource called Diverse Device Hands: it is basically a set of phone mockups held by hands that you can use in any presentation of your designs. The package includes PNGs of the hands holding various devices as well as a Sketch file of the hands with vector devices.
Download freebieDiverse Device Hands by Facebook
Sketch
![Diverse Device Hands by Facebook](https://freebiesbug.com/wp-content/uploads/2016/06/diverse_hands_mockups_facebook-580x435.jpg)