Bluetooth has become an invisible part of everyday life. Wireless earbuds, smartwatches, cars, speakers, keyboards and even fitness equipment can connect to your phone without a cable.

Because Bluetooth can remain switched on throughout the day, many people wonder whether leaving it enabled creates a security or privacy risk.

The reality is more nuanced. Bluetooth itself is not something you need to fear, but keeping your phone updated and being careful about unfamiliar connections is important.

Bluetooth doesn't mean your phone is constantly broadcasting everything

Modern Bluetooth technology is designed to use relatively short-range wireless communication and various security mechanisms.

Having Bluetooth switched on does not automatically mean that someone nearby can access your phone. In most situations, a device still needs to establish a connection and go through the appropriate pairing or authentication process.

However, that doesn't mean Bluetooth-related security risks are impossible.

Unknown pairing requests deserve attention

If your phone suddenly displays a request to pair with an unfamiliar device, don't automatically accept it.

You may be near another person's earbuds, laptop or car, but there is rarely a good reason to approve an unexpected connection.

If you don't recognise the device, simply reject the request.

Old devices can create unnecessary connections

Take a look at the Bluetooth devices saved on your phone.

You may find headphones, cars, speakers or smart devices that you no longer own or use. Removing old pairings can reduce clutter and make it easier to notice a genuinely unfamiliar device.

Keep your phone updated

One of the most important security precautions is surprisingly simple: install operating-system updates.

Bluetooth is implemented through software and hardware components, and security vulnerabilities can occasionally be discovered and fixed through updates.

Keeping your phone updated is therefore more useful than constantly worrying about whether Bluetooth is switched on.

Be careful when using Bluetooth in crowded places

Airports, railway stations, shopping centres and other crowded locations contain hundreds of wireless devices.

You don't need to panic simply because Bluetooth is enabled. However, avoid accepting unexpected pairing requests or approving connections that you don't recognise.

If you are not using Bluetooth at all, switching it off can also reduce unnecessary wireless activity.

Your car is another important Bluetooth connection

Many people automatically connect their phones to their cars for calls, music and navigation.

This is convenient, but remember that your vehicle may retain information about previously connected phones.

If you're selling a car or handing it over to someone else, remove your phone from the vehicle's paired-device list and delete any personal information stored in the car's infotainment system.

Bluetooth accessories can collect information too

The security discussion isn't limited to smartphones.

Smartwatches, fitness trackers, wireless headphones and other connected accessories may communicate with apps and online services. Check what permissions their companion applications request and whether the manufacturer provides regular software updates.

So, should you turn Bluetooth off?

For most people, there is no need to obsessively switch Bluetooth off every time they leave home.

A better approach is to keep your phone and accessories updated, avoid unfamiliar pairing requests, remove old devices and review the permissions given to companion apps.

Bluetooth is designed to make technology more convenient. The safest approach isn't to stop using it — it's to understand what you're connecting and avoid approving connections you don't recognise.