iPhone 6(S)/Plus iphone 6s audio recording

[Derrotero]

Hello,

Considering to buy second-hand iphone 6s and among other, interested in audio recording quality when recording video - for amateur recording of piano play.
What audio quality can i expect? Will it be worth for for example, youtube?

 

[DBZmusicboy01]

Hello,

Considering to buy second-hand iphone 6s and among other, interested in audio recording quality when recording video - for amateur recording of piano play.
What audio quality can i expect? Will it be worth for for example, youtube?

iPhone XR But if looking for the best price iPhone 8
iPhone 6S is no longer supported.
XS has stereo audio recording.