Airplane Mode is displayed on an iPhone.

Source: https://www.samfordcrimson.com/5-ways-to-charge-your-phone-faster-than-ever-before-2023-11-21.html

Can You Use Bluetooth While On Airplane Mode?

Source: https://www.devicemag.com/does-airplane-mode-disable-bluetooth/

However, if Bluetooth is enabled but not connected to any device, it will automatically turn off when you enable Airplane Mode.

Source: https://www.devicemag.com/does-airplane-mode-disable-bluetooth/

To turn on Airplane Mode, swipe down from the top of your screen and tap on the airplane icon.

Source: https://www.samfordcrimson.com/5-ways-to-charge-your-phone-faster-than-ever-before-2023-11-21.html

When Airplane Mode is enabled, it disables all wireless connections, including Bluetooth.

Source: https://www.devicemag.com/why-won-t-my-bluetooth-turn-on/

You can also check that Airplane Mode isn’t enabled on your watch by opening Control Center (swipe up from bottom of screen) and making sure airplane mode is off (green).

Source: https://www.devicemag.com/apple-watch-not-pinging-phone/