Instructions apply to all models, including the 4th generation Amazon Echo Dot.
How Do I Put My Echo Dot in Setup Mode?
Tap thePlus(+) in the upper-right corner.

Amazon
TapEcho, Echo Dot, Echo Plus, and More.
It should take about 30 seconds.
TapYesin the Alexa app.

Tap yourEcho Dotunder Available Devices.
Choose your Wi-Fi online grid, then tapContinue.
Continue following the prompts in the app to finish setting up your gadget.

SelectSkipwhen the option appears to configure these tweaks later.
What Is Echo Dot Setup Mode?
The first time it powers on, your Echo gadget will automatically enter setup mode.

In setup mode, the Echo Dot connects to the Alexa app on your phone via Bluetooth.
Once connected, you must connect your Dot to your Wi-Fi web link.
Your Echo Dot will not work without a Wi-Fi connection.

you could tell your Echo is in setup mode when the ring of light turns from blue to orange.
Once you’ve set up your Echo Dot, you might start using Alexa voice commands andAlexa skills.
Why Won’t My Echo Dot Go Into Setup Mode?
If someone else previously owned your Echo, they likely already set it up.
The steps for resetting your Echo Dot are different depending on your equipment’s generation.