The free version of Spotify just got a little better. The music streaming service has extended Spotify Connect, a feature that lets you control music on compatible speakers through phones, laptops and other devices over Wi-Fi to free accounts. Prior to the change, free subscribers could only connect to smart speakers via Bluetooth, which generally provides a... spottier connection. (Sorry. Had to).
Access to this new feature might be a little slow to surface, though. The new support requires speaker manufactures to update their products with the latest version of Spotify's SDK. Developers have had access to the change since September, so it's entirely possible that every speaker is up to date, but this kind of maintenance isn't mandatory, so we don't know for sure.
On your end, make sure to update your Spotify app on your devices. You can also check to see if your speakers are Connect-compatible on Spotify's gear page.
From there, connecting your phone to your speakers through Spotify is very easy. If you need help, there are some quick instructions for you in the video below.
You can also check out Spotify's support page for some step-by-step instructions.