We did a lot of testing with actual homeless youth in Minnesota. Turns out, most homeless youth have a phone with a web browser.
I'm sure user research would answer this quickly, but my guess is that many may still have smart phones or, if not, public library internet access.
What is interesting is that most homeless youth or at-risk homeless youth do have access to smart phones. The difference is that they typically do not have an active data plan and rely on wifi access at local libraries, shelters, coffee shops, etc.
I was also involved with this... more on the product side working with the shelters.
A bit of delicate feedback: perhaps 'product' is a word that could be replaced with a differently-shaped synonym.