Universal Tablet/Phone Holder

Hello.I tried to design the holder for a universal phone size (fits vertically) or tablet (fits horizontally). The holder itself is designed for the car for passengers in the back (for children :D). I print it from PETG for better flexibility. However, I recommend printing from ASA or ABS due to the temperatures on summer days. I do not recommend it from PLA!!!! although it can also work. After printing the "tablet_holder_part1" part, the "handle" must be broken so that it is movable and can be screwed with it. Printed on Bambulab X1C layer 0.2. If something is wrong or you have comments, write!!!! I will try to fix it. EDIT: Added hole for charging cable