I was just wondering, since the new DS4 uses Micro USB, the same as most Android phones, can it be charged with a phone charger?

If it's a Micro USB then I assume so. My Galaxy and Blackberry cables worked fine, so I don't see why yours wouldn't.

ask sony on twiter

Yes, it will work. Most people with an Android phone have these cables...they are not rare. The problem is they are not USB 3.0 cables, and you DO NOT WANT USB 3.0 cables because the Micro Connector on USB 3.0 is VERY different.

What you want if you want a nice 6ft to 10ft cable is a USB 2.0 - A-Male to Micro-B Cable.

If you really need one, they are like 6 dollars on amazon, including tax.

http://www.monoprice.com

Your phone charger should work. If you need more go to monoprice and you'll find some for a ridiculously cheap price.