Layla did that to my phone too. Just tell your husband it adds character
I had left my cell on the couch, and she didn't go near it until I got a text and it vibrated. She thought it was a toy! Anyways, she now knows very well not to go near the cell phone. She doesn't like when mommy raises her voice
Hopefully after your husband calms down he'll realize that Max didn't know any better, and if the phone is still usable, who cares if there are a couple of marks?