People travelling by plane could have their phones removed from them at the airport if they aren't charged.
While many of us are caught up by bringing too many liquids in our hand luggage, there is one rule regarding electronics that many Brits won't be aware of.
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Mobile phones and other electronic devices are a common part of everyday life, so it's no surprise they are regularly packed in hand luggage before jetting off overseas.
However, Brits who plan to pack electronics should be aware of some key rules which, if broken, could mean they cannot take them on board with carry-on luggage, The Express reports.
Any holidaymaker could be asked on the spot to prove their device's function while passing through an airport's security, usually by turning the device on.
On its travel advice pages, Gov.uk warns Britons: "Make sure your electronic devices are charged before you travel. If your device does not switch on when requested, you will not be allowed to take it onto the aircraft."
Electronic devices don't just include phones - the rules also apply to laptops and tablets.
On its website, British Airways explained the rules: "You can generally take electric and electronic items in your hand or checked baggage, but need to follow specific safety instructions.
"Airport security staff may ask you to turn on electronic or battery-powered devices, such as phones, tablets, e-books and laptops, to demonstrate their function. If you're not able to do this, you will not be able to take your device with you.
"Please ensure that any items in your hand baggage are fully charged and switched on before you arrive at the airport. If your device is not charged, please place it in your checked baggage.
"If you are connecting, make sure that you do not deplete power in your devices during the first part of your journey as charging points at airports might be very limited and you may need an adapter."
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