Since we don't know your mom's phone, apps and settings you would have to research how it did that.
well... my mother´s phone can just make a nice thing on my LG TV. she can go to gallery and choice a photo and project it in the television. she do the connection by wi-fi (im sure). when she have the wi-fi turned onn she have a option in the gallery to project the image on TV. i try to do the same thing in my phone but didnt work!! when i have wi-fi turnedd onn, the option to project the photo dont show up, just dont appear!!
Someone know what i have to do to enable this function? Thanks

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