I am preparing for an online PhD interview soon. I took notes about every possible question that the board would ask me during the interview. My question is : is it totally fine if i had to read from those notes (to provide a detailed answer) during the interview in order to answer their questions ?
I would suggest you answer without any kind of visual aid: you may come across as inauthentic or the interviewer might think you are cheating in some way. Just practice your answers a couple of times until you feel comfortable.
However, you can write down your own questions to your interviewer and read them when you will be asked if you have any questions. I reckon this is highly appreciated.