Clean phone with computer program?

I'm looking for a (preferably free) reliable program that will clean junk files off my phone that runs of my computer, because it has super limited space that is full so I can't download any cleaning apps.

  rdave13 19:29 13 Feb 16

A very uninformative ask for help don't you think? More info about phone and software you use on your PC to connect the mobile.

it's an android smart phone, I connect it with a usb cable that goes into the charger port. I figure any program that can clean external devices should work.

  rdave13 19:43 13 Feb 16

A Windows PC? Connecting an Android phone to it perhaps? Have you the android's phone software installed on your Apple or Windows PC?

I figure any program that can clean external devices should work.

Then carry on.

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