1. First, prepare an A4 paper and split it in two (an A4 paper can be folded in half).
2. Fold it up and down, fold it into creases, and fold the four corner creases to the center line. Leave two corners, turn them over and fold the crease along the dotted line.
3. Then put it in the lower two corners and fold it.
4. Then turn it over and spread out the two corners. The two corners are folded along the dotted line.
5. Then this corner is folded along the connecting line of two points, and so is the left side.
6. Then unfold the paper and fold it up along the connecting line of two points.
7. Turn it over and fold it along the dotted line. Turn around and fold the crease.
8. Then fold it in half along the center line and cross it left and right.
9. flatten these two corners and fold them in, and the origami of a mobile phone bracket is completed.