In the mobile app, you will learn what you wonder about the Amazon Echo Dot 4th generation setup and features. In addition to its stylish design and decorative appearance, Amazon Echo Dot 4th gen is much more than a normal speaker with its sound control system. With the Alexa app for Android, you can play music, turn lights on and off, set alarms, talk to each other, and manage your smart home from your device. Amazon alexa echo dot 4th generation is light in weight, supports bluetooth and wifi