Use your Dot as a Bluetooth speaker and more
Can Amazon Echo Connect to iPhone?
Tap theBluetooth sliderto turn it on if it isnt already on.
Wait for theEcho Dotto show up in My Devices or Other Devices.

For some Echo devices, you will need to say Alexa, pair for it to show up.
Your iPhone will connect to your Echo Dot via Bluetooth.
How Does Echo Dot Work With iPhone?

Echo Dot works primarily as a wireless Bluetooth speaker when you connect one to an iPhone.
Tap the AirPlay icon (triangle with concentric circles).
Tap your Echo Dot in the Speakers & TVs list.
To switch to your iPhone speakers, tap iPhone.
To switch to any other Bluetooth speaker or earbuds, tap that rig instead.