I have recorded myself a few times playing classical guitar by using both the iPhone X selfie camera and the voice recording app with surprisingly descent results.
I have been thinking to look for ways to improve the quality without investing a lot in gear so I was looking at some microphones for smart phones on Amazon. There are quite several options and I am looking at a cardioid that comes with a handy tripod. The microphone sits on top of the phone in the tripod.
I've read that the best results are obtained when placing the mic somewhat close to the guitar in front of the sound whole or closer to the fretboard, in this case the mic would be on top of the "camera" between two and five feet away depending on the shot.
UPDATE: The purpose of these recordings is to upload videos to my YouTube channel. This does not pursue professional and/or promotion objectives. Just the enjoyment of "documenting" and bragging about my personal journey and improvements in my study and practice of classical guitar.
My question is, provided this mic does improve the quality of the recorded sound, is this something that would be worth it? I mean technically it would be the exact same setup so there should be an improvement but I'd love to have a more educated and technical answer.
I know I'm not supposed to ask about gear or equipment, but if the answer to this question is "not worth it at all" it would help to get a tip or two about how to improve the recorded sound quality with the phone.