Supporting assembly and supporting frame thereof

A supporting frame, comprising:

• a base plate, configured to support the supporting frame;
• a connecting plate, configured to attach to and fix the base plate;
• a back plate, wherein a first bending part is provided between the back plate and the connecting plate;
• a supporting plate, wherein a second bending part is provided between the supporting plate and the back plate, a third bending part is provided between the supporting plate and the base plate, and the first bending part, the second bending part and the third bending part are parallel to each other;
• and
• wherein at least two dividing holes are provided between the connecting plate and the base plate to separate the first bending part, the second bending part and the third bending part;
• wherein the dividing holes extend from the connecting plate to the base plate, auxiliary supporting plates are formed between adjacent dividing holes in a dividing manner, and the auxiliary supporting plates are provided with a fourth bending part that allows the auxiliary supporting plates to be folded and attached;
• and
• the auxiliary supporting plates are integrally connected with both the base plate and the connecting plate;
• when the supporting frame is bent and deformed through the first bending part, the second bending part, the third bending part and the forth bending part, the supporting plate and the back plate are erected, the connecting plate is attached and connected to the base plate, the auxiliary supporting plates are folded and attached, and an included angle is formed between the supporting plate and the back plate;
• and
• during use, bottom surfaces of both the base plate and the auxiliary supporting plates are attached to a same external plane, while the erected back plate is configured to conform to a rear surface of a mobile device and provides structural support.