Who said I'd be using my phone? I got a digital camcorder actually, yes maybe a few of the busy well known porn girls might say no, but there are plenty of models that will do a POV type shoot.
'using your phone' is a term used by models who turn up at a shoot and meet a guy who obviously isn't a photographer or film maker. Trust me, you're not the first guy to think of it, and some of the guys that do are pretty weird (one model I knew turned up at this guys house after being told it was a 'studio' and found it full of horder junk/catshit and his mum lived there too). So, booking a model as a model generally need you to have references.
Sure, there are a few who don't mind pov shoots. However they are also usually the girls who escort, which just makes it a complicated role playing punt from my perspective. It makes sense, as if you're agreeing to meet a guy with no photographers credentials to suck cock, the camera really isn't something that makes it less like prostitution.
Go for your life, though, common sites are below:http://adultindustryresources.comwww.madcowmodels.co.uk
You might want to get some shoots under your belt (there are usually groups that meet up and do shoots) for some genuine feedback from models if you're wanting to spend time with a model who does not escort. But it's all seeming like a lot of effort by that point, may as well take that big titted teenager down the end of the road for a nice meal, give her a nice necklace and ask for a blow job in return (you know, it's less effort just to date them than creating an elaborate web of lies to get yourself a blowjob!).
TBH, you might just have better luck booking a girl for a normal photography session, complement the shit out of her and hope for some sexy time at the end (happens more than you think, especially if there is the lure of publicity/more work).