SMS Sending and Receiving app (Android studio + MySQL + PHP)
With this application, you can use your Android device as a SMS gateway. A webserver is running and with a HTTP GET or POST request to the WebServer you can send and read SMS.
SMS Gateway on your device. Send SMS through HTTP GET requests, add users which can send SMS through a web page (and optionally limit to a set amount per month), parse incoming SMS and forward them to Email, SMS, URL based on rules! And more!
Complete tutorial is here https://www.youtube.com/c/AtifNaseem