A little-known airport rule could cause your phone or laptop to be taken away before your flight.

This rule is enforced at airport security and can affect passengers on TUI, British Airways, Ryanair, or easyJet flights.

Most people take electronic devices like phones, tablets, or laptops when they travel. However, if your device is not charged, you may have a problem at airport security. All devices must be turned on at security checks.

Most people take electronic devices on flights.

If your device is not charged, you may not be allowed to board your flight. The UK government says to charge your devices before traveling. If your device does not turn on, you will not be allowed to take it on the plane.

If you have an uncharged device, you can put it in your checked bag if you haven't checked it yet. The rules vary depending on the airport and airline.

British Airways warned about flat batteries.

British Airways advises passengers to charge their devices before arriving at the airport. If a device is not charged, it should be put in checked baggage.

British Airways also advises passengers to keep their devices charged during connections, as airport charging points may be limited.

For London-Heathrow passengers with flat batteries, British Airways may require them to rebook on a later flight or leave their items at the lost property office.

TUI warns passengers to charge their electronic devices before going through airport security. This is part of new security measures at UK and international airports.

EasyJet passengers should check the airline's list of prohibited items.

Damaged batteries are also a problem. EasyJet and Jet2 prohibit damaged batteries, so check your devices before going to the airport.

Ryanair advises keeping your phone charged, but does not provide additional guidance on what to do if your device dies at airport security.

You can find more information about airport security on the UK government's website.

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