Johnny Depp, Amber Heard: LAPD Holding Firm ... No Visible Injuries

Amber Heard is now fighting her domestic violence battle on 2 fronts ... the LAPD is sticking to its story the cops who responded to the 911 call saw no evidence of injury and no disarray in the apartment.

Amber's lawyer said Monday, "The LAPD officers viewed not only the disarray that Johnny had caused in the apartment but also the physical injuries to Amber's face."

TMZ broke the story ... the cops who responded say they saw no evidence of injury, no disarray ... no evidence of a crime. An LAPD official tells us they are sticking to their story.

Johnny says Amber is lying ... he never struck her with an iPhone. As we reported, 2 bodyguards were in the entryway of the apartment during the argument and they heard Amber scream, "Stop hitting me!" They say within a second they entered the living area and saw Amber sitting on a sofa in the living room and Johnny at least 20 feet away in the kitchen.

Amber's lawyer says she was trying to protect Johnny's career and that's why she did not file a police report but she'll do it now, because her character is being assassinated.