i remixed the original to reduce the used filament amount.
i basically removed the interior support and added bunch of holes skeletizing it.

its printable without any support if you print it on the side.
The small holes on the bottom plate are supposed to fit 6mm screws if you want to fix it to the desk or something. (but beware of overhangs in these small holes)

i printed this in "Filament PM" branded PETG and its holding up perfectly.

If you look at the part where the phones bottom touches the stand - theres a little cutout. i cut it out to make it easy to cut through the connection. (you can see this in the first foto i took if believe)

This ensures its printable without support while also fitting a charger cable - i recommend to use snips for this.

i also added the Fusion360 Project if somebody wants to improve or edit stuff.