This article explains how to connect Bluetooth headphones to Android and iOS phones. The instructions should apply to all phone manufacturers.

These steps work with iOS 12 and later and Android 9.0 and later:

Make sure to charge both your phone and your headset. A full charge isn’t necessary, but you don’t want either device to turn off during the pairing process.

Turn on Bluetooth on your phone if it isn't already and keep the Settings app open. Bluetooth options are here, but see the first two tips below if you need specific help.