Why isn't my usb is connecting?

A

AC Question

usb is not connecting

hey when i connect the usb to the pc , my phone is not detecting any pop up window to connect usb like before !!! My phone is just getting charged when i connect to pc !! i tried lot process like factory rest mobile , switch off , tried with different usb cable also but doesnt working !! so please just help me !! even i need to know that can i update my phone to next version ???/ should i need to root before update ??? presently im using micromax a089 - 4.2.2 version ???
 

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