I own a digital handheld microphone, the iRig Mic HD, which is equipped with a series of cables and is able to work with PCs, Macs, iPhones and some Android smartphones (OnePlus, Xiaomi tested OK). Unfortunately I have never been able to use it with any Samsung phone: S9 Plus, S10 Plus, Note 10 Plus: none would work with this microphone: when you connect it, it is correctly powered and recognized as external mic, but in the recordings you only get loud noises (like bzzzzbzzzzz).
A few weeks ago I bought the Galaxy S7 Plus tablet, I gave it a try and with great surprise I discovered that on this product the microphone works like a charm. Unfortunately the "miracle" did not happen again. I also bought a Note 20 and here there is no way to make it work, it gets the same problems as the older Samsungs.
Do you have any idea what could be the reason for such a different behavior on the devices and if there is anything I can do to make that microphone work on the Note 20?