Greetings,
I have done exactly same setup before for another client here on freelancer, so I can complete this project for you, if you agree to my price of 100 USD
The phone has to be an Android phone, any cheap android phone will work for this.
You can check my profile to confirm i have completed similar project in the past.
You can contact me via chat if you have any question, or would like me to get started.
Looking forward to hearing from you.
Regards