A while ago, my phone mount got broken, i had to replace it so i made this. print two of this and you get a simple phone/table mount.
With Hook and loop fasteners (Velcro) you can make this work with a number of different mobile phones. 8.75mm is reasonably big enough for most phone to slip in.
Notice that i placed a small scrap plastic in one of the holder, that's so that my front facing camera can still be used while in the holder (my initial design had a small slit so that the front facing camera can be used but with the slit, the phone becomes too wobbly when driving.)