React Native Chat Module Upgrade

I have an existing React Native application with a PHP backend and a very bare-bones chat module. I now need this area completely refreshed and extended. What I need • File-sharing capability baked into the chat flow... (Budget: ₹1500 - ₹12500 INR, Jobs: Android, Backend Development, Chatbot Development, iPhone, Mobile App Development, Mobile Development, PHP, React Native, React.js)