Summary

Now you can use an existing tripod to mount your phone.
Works as is or with a 1/4'' BSW thread pitch 20 TPI nut.
I ordered some on aliexpress
it comes with an opening for the charge plug so it can be used for timelapse recordings as well

Print Settings

Printer Brand:

RepRap

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>prusa i3</p></div></p>                                                                                <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>Doesn't Matter</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>Yes</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.4 mm</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>25%</p></div></p>                                                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>I would recommend ABS for this thingi</p></div>

How I Designed This

created from scratch in Blender

Galaxy S4 Mini tripod mount