Adjustable electronic device stand

An adjustable electronic device stand, comprising:

• a base member comprising a circular accommodation recess located in a top side thereof;
• an adjustment mechanism comprising an axial rotary table, a rotating component set and a longitudinal adjustment unit, said axial rotary table comprising a circular table body rotatably mounted in said circular accommodation recess of said base member and a connection shaft located at a top side of said circular table body, said rotating component set comprising a stub rod member affixed to said circular table body and rotatably coupled to said base member and a driving plate, a rotating plate and a position-limit plate mounted on said stub rod member at different elevations for enabling said stub rod member to be rotated with said circular table body relative to said base member by an external force and then positioned in a selected position after disappear of said external force, said longitudinal adjustment unit comprising a first pivot located at one lateral side thereof and pivotally coupled to said connection shaft and a second pivot located at an opposite lateral side thereof;
• and
• an electronic device holder mounted on said longitudinal adjustment unit, said electronic device holder comprising a mating connection member located at a bottom side thereof and pivotally coupled to said second pivot of said longitudinal adjustment unit, a supporting platform located at an opposing top side thereof for supporting an electronic device, a signal connector located at one side of said supporting platform for the connection of an electrical connector of the electronic device that is supported on said supporting platform, and a retractable clamp located at an opposite side of said supporting platform for clamping on one side of the electronic device that is supported on said supporting platform.