Android Question B4A & AWS MQTT Connection (IOT)


Licensed User
Hello everyone!

I must make an app (to be more specific 2 apps Android & IOS).
I want to connect with AWS MQTT Broker, via MQTT protocol.
I made a lot of tries to achieve a connection (first of all, and then publish-subscribe to a topic), with no success.
Is there someone, who has used AWS, to help me?

Thank you in advance.