Foldable phone stand

Foldable phone stand.
Video tutorials:
part1: https://www.youtube.com/watch?v=P2zyG2UIPjA
part2: https://www.youtube.com/watch?v=N1n2WHn9w6k
part3: https://www.youtube.com/watch?v=Db5CTzh7Lbw
part4:https://www.youtube.com/watch?v=8IpPYvPYwUE
part5: https://www.youtube.com/watch?v=FNm70cnhIT0