I need to buy Osmo Mobile 3 today but one big question begs. I'm using a video app that forces me to rotate my phone to the right (not the typical left) to get to the landscape mode (horizontal mode). Meaning turning the phone to the right side.

So, could Mobile 3 support this right-sided mounting option?

You may end up filming the arm if you do that.

Upload your log file here - http://phantomhelp.com/logviewer/Upload/

Very doubtful by the sound of it

You guys are right. Thanks for the feedback

Hello there catibe3741. Thank you for reaching out and for these information you have shared. I hope that you will get the best information from our valid DJI members who uses these 3rd accessories on there DJI Osmo Mobile 3. Just a reminder that we do not recommend you to use a 3rd party accessories on your DJI Osmo Mobile 3 for compatibility and reliability purposes. Actually, there is a  possibility that these #rd party accessories will work, however, since it's not yet tested by DJI we cannot guaranteed the stability of the said accessory when in use. In addition using 3rd party accessories might cause damage or harm on your DJI Osmo Mobile 3 and can void the warranty as well. Thank you for your understanding.