Echo devices are designed to detect only your chosen wake word (Amazon, Alexa, Computer, or Echo). The device detects wake word by identifying acoustic patterns that match the wake word. Once the word is detected, audio begins streaming to the cloud, including a fraction of a second of audio before the wake word. No audio is stored or sent to the cloud unless the device detects the wake word (or Alexa is activated by pressing a button).
For the Alexa app, you need to download Alexa app from the Google play store or Alexa.amazon.com in your device. After that, start Alexa setup with Amazon Echo dot or other Amazon Echo devices. Alexa app helps to control your home devices by your voice command.
Now, open your Alexa app settings by doing Alexa login. Connect Alexa to wifi network and select your Amazon echo dot from the list of Echo devices.
If you getting any problem in your new or old Amazon echo device so here, you will see the easy steps for echo dot setup, echo show setup, echo dot setup, etc.
Follow the steps for the Alexa app setup, Echo app, and Amazon echo setup.