Should I use a splitter for my iphone 7?

i am a singer and i wanna start recording music. Today i finally started to invest money into this thing i have been wanting to do only problem is i d

i am a singer and i wanna start recording music. Today i finally started to invest money into this thing i have been wanting to do only problem is i dont know if i should use a mic splitter for better sound quality on my phone. i already have a professional mic that goes through some professional speakers but im recording with my iphone 7 as my main camera. it has 4k resolution video so its the one for the job. only thing is its audio intake is terrible just like every other phone. i bought 3 mics that are specific for phones i was wondering if i should connect all 3 of them. put 1 mic by each speaker and 1 mic on me along with my professional studio mic... will the splitter work with the 3 mics? will the sound be clearer or more worst

or:i am a singer and i wanna start recording music. Today i finally started to invest money into this thing i have been wanting to do only problem is i dont know if i should use a mic splitter for better sound quality on my phone. i already have a professional mic that goes through some professional speakers but im recording with my iphone 7 as my main camera. it has 4k resolution video so its the one for the job. only thing is its audio intake is terrible just like every other phone. i bought 3 mics that are specific for phones i was wondering if i should connect all 3 of them. put 1 mic by each speaker and 1 mic on me along with my professional studio mic... will the splitter work with the 3 mics? will the sound be clearer or more worst

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