I really think it's not a good idea to buy S21 for one reason is that Samsung moved from Headphone Jack to Type-C and didn't manage it as it should.
When you use a "Type-C to Jack" Adapter, it won't work. All the adapters are not supported. In my case now, I should use external mic to record some interviews I can't because any of the adapters I bought is supported.
I figured out that a lot of people are suffering from the same issue and reporting it and Samsung don't even care to solve this issue definitely.
I need to use Jack Headphones/Speakers and Jack Microphones on this phone. What to do now? Throw this phone from the window or what ???
But it degrades sound quality a lot. Mic's gain is hampered a lot with this particular cable. I purchased this and found that my amazing mic is downgraded to (probably) only 1% better than the built-in mic.