Besides turning off Bluetooth on your iPhone when it’s not needed, it’s also a good practice to make sure you have the most up-to-date version of iOS installed. This is because Bluetooth has come a long way and older versions of it, as well as the operating system, are the most vulnerable to BlueBorne attacks, according to Geeks For Geeks. If you are using the latest version of iOS, you’ll be better protected, but remember that attackers are always finding new ways to target devices.
Ultimately, turning off Bluetooth on an iPhone is very simple and takes only a couple of seconds. To do this, head into Settings, tap Bluetooth, and then toggle off the switch. Alternatively, you can swipe down from the top right corner of the screen to open the Control Center, then tap the button with the Bluetooth logo to turn off the communication feature (via Apple).