Wait, you're blaming your mother for putting your phone in the wash. If you want to be taken serious by your mother act like an adult and do your own laundry.
To be honest, as I read this thread, you do come off as a spoiled brat. You try to justify your position and blame others for your situation - wait that's the American way - never mind

Seriously, if you want a droid, get your own phone plan. From the sounds of it, you're on your mothers plan and she's paying your way.
As for paying her the difference, I've known too many kids who promised that and suddenly didn't have money to pay. Given that you don't have real job only increases her concern about footing the bill, I'm sure.
If you start acting like an adult, you'll be treated like an adult. You're 16, get a job, start doing your own chores. Respect your mother's wishes and as time goes on, I'm sure she'll start treating you as an adult.