I bought a Logitech K780 keyboard and can fit most phones without a case in the slot but as soon as I put a case on my Pixel 10 pro it no longer fits.  made this little adapter for a wider slot to fit my phone.  It also has carve out for swiping up from the bottom of the screen/gestures.  

Width of the phone support is 14mm.  This perfectly accommodates my pixel 10pro with a case on it as well as other larger phones.  

Printed in PLA with 1.6mm (4 layer) walls and came out well.  I printed mine sideways for more functional strength but I think it would print in it's intended position as well.