I wish that DJI would make a cord that works with phone cases. Most people use phone cases and some of them are not paper thin so  the length of the DJI plug won't work.

Does anyone have a recommendation as to where to buy one that works well?

Hello there. I am sorry for the trouble this has caused and thank you for sharing these information with us. I will cascade these information to the designated DJI department for further attention. Thank you.