WAP Chat site

I need a WAP based chat site which should be simple and easy to use. Users will login via their mobile phones and see who is online. They can then click on the user they would like to chat too...so basically their own private room. There needs to be an administration section where a moderator can check on all chats happening. The admin section also needs the following: User list (can search by month) Stats/User: User chat history etc - again by day/month. Ban Users Accept/deny users The site is a paid per week service, so the site should be able to integrate with the Service Provider who is doing the online billing.