I have an iPhone 12 Pro, it used to work fine with the Mini SE.
I didn't use the drone for a  while so the iPhone offloaded the DJI app and when I reinstalled it - the phone will not connect to the RC.
I tried removing and reinstalling the app mulltiple times but no luck.
I took another iPhone 6S and I did manage to connect to the drone so it's not the cable or the remote

Any idea how can I get my iPhone 12 to connect again to the RC ?

Hi there. Thank you for reaching out and we're sorry for the trouble that this has caused. Can you please try to download the latest version of the DJI Fly app on our website (https://www.dji.com/downloads/djiapp/dji-fly)? After that, kindly please download also the DJI Assistant 2 software on your PC/MAC, and kindly please update/refresh the firmware of both aircraft and RC then check if the issue persists. You may download the correct version of DJI Assistant 2 on the link below. Please keep us posted. Thank you.

https://www.dji.com/downloads/djiapp/dji-fly