A smartphone? Really? Mine only records in mono and I'd be surprised if it operates any wider than a couple of hundred Hz to 10KHz. As for dynamics, it saturates quickly.
I've been listening to room recordings on YouTube. I don't know what the room, mic and other recording characteristics are but some recordings sound huge and wide and others sound very narrow. This could be because some are recorded in far-field vs. near-field. The ones that sound huge and wide also sound like that when I play the same tune off YouTube. As for the ones that sound narrow, they sound wide and deep in my room and some are absolutely huge.
