Before you can connect Alexa Smart Home with your T Smart devices, you need to follow these steps: 1. Download the “T Smart" app from Google Play or App Store.
2. Sign up or sign in with your T Smart account.
3. Setup the device with your “T Smart" app, and make sure you can control it in the app.
4. Open Amazon Alexa app (if you haven't install, go Google Play/Apple store to get it), click Setting Menu at the top left, select Skills & Games. And then search for "T Smart" action and enable it by signing in with the same ID you used in the “T Smart" app.
5. After the setup is finished, you can control the device with Alexa Smart Home.