Open the helabet-app.com website using your phone's web browser;
Click on the "Mobile Applications" link located at the bottom of the website;
Select the Android icon to download the Mega Paris Android app;
If your device is set to block installations from unknown sources, go to "Settings" > "Security" > "Unknown sources" and allow installation from unknown sources;
After downloading the file, locate the APK file in your phone's file manager and tap on it to start the installation process;
Follow the instructions on the screen to complete the installation. You may be asked to give permission for the app to access certain features on your phone, such as your camera or microphone;
Once the installation is complete, open the Méga Paris apk and log in using your existing account details or create a new account if you don't have one already.