My phone is connected to my computer but my phone won't let me connect as a USB, why?

[AC Question]

my phone is connected to my computer but m phone wont let me connect as a USB

My phone is connected to my computer with the USB cable, my phone will charge but wont pick up that USB connection so i cant put music on my phone and i wont to know why because before i factory restarted my phone it was working fine but ever since then it wont allow me to copy anything onto my phone

 

[Aqil Lee Chaelin]

Re: my phone is connected to my computer but m phone wont let me connect as a USB

What kind of phone are you using?

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