need help finding lost cell phone I'm trying to help my father locate his lost android cell phone.  He doesn't know the gmail account info it is connected to, so we cannot locate it that way.  (was set up for him, not his own doing)  Without a gmail account address/username or the 'recovery' info to find that out, is there a way I can help him locate his cell phone???
The reality is no... not unless you had some other tracking software like Where's My Droid or similar installed prior to it going missing/stolen.

Law enforcement generally will not do anything, in order for them to track the device with the carrier requires a court order, and a sub-$1000 device is rarely significant enough to warrant what they have to  get it done, and it is rarely effective anyway. 

The best you can do is contact the carrier and report it stolen, which will blacklist the IMEI/MEID and it cannot be activated on most carriers, rendering it worthless.

Unfortunately, this happens a lot, there isn't really any way to recovery the phone unless you just lucky and call it and someone answers and is willing to return it.

It should also be mentioned that if you are somehow able to locate it, if it was truly stolen you should NOT attempt to recover it yourself... the potential of something bad happening is high, contact law enforcement if you are sure you know where the device is located.