I wanted the phone to site as low as possible. So the charging cable bend is tight to route out the back. I reused an old iPhone charging cable that was coming apart at the bottom of the connector. (otherwise what are you going to do with it right!). The cable is inserted in the trough in the bottom. Pushes in pretty easy and allows the stand to sit flat.
I also made this version a little wider so it is stable for a larger iPhone (e.g. 7 plus, 11 PRO max). I rafted the bottom for good adhesion to the print table. No supports are needed if you print the stand sitting on its bottom.