Will unlocking an AT&T phone bring back the MP3 player that is likely hidden by the annoying software that includes "AT&T Music" or "Music on the Go"?

I don't want or need a data plan, and resent having to pay for one to listen to my own music.

The phone I'm interested in for my 13 y.o. son is the LG Neon. But I am looking for any phone that has an MP3 player w/ 3.5mm headphone jack, and preferably, a full keyboard.

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