dual phone charger 3d model

A wall-mounted double smartphone charging shelf designed specifically for FDM 3D printing. Two separate phone compartments side by side, with a central divider. The phones are NOT included in the model. Each compartment has a flat horizontal bottom surface where the phone rests. Add exactly ONE circular charging cable hole in the horizontal bottom surface of EACH compartment, positioned toward the center/back of each compartment so a charging connector can pass through from underneath. Add exactly TWO countersunk mounting holes in the vertical backplate, one near the left side and one near the right side. These are mounting holes for 4 mm screws. The shelf should have strong thick walls, rounded edges, simple manufacturable geometry and no unnecessary small details. The model must be a real solid 3D object suitable for FDM printing, not a decorative render.