UK holidaymakers could see their dream getaways turn into nightmares due to an obscure airport regulation. Blue and burgundy passport holders are being cautioned that a "secret" rule at the airport might cause major disruptions even before they reach the boarding area.

While many are preoccupied with the potential of long security lines or industrial action causing them to miss their flights, your smartphone could actually throw a wrench in your travel plans. WildPack American Summer Camps' travel gurus have issued a warning that a dead phone battery could result in travellers being stranded or having their devices seized. Travel aficionado Jamie Fraser has highlighted a critical issue: "Many travellers are unaware that airport security now operates under stricter guidelines regarding electronic devices." 

He continued: "If security personnel cannot switch on your phone to conduct necessary checks, they have the authority to deem the device, or you, a security risk."

A depleted battery could lead to being turned away at the gate. If your gadgets fail to power up upon request, you'll be barred from bringing them aboard, reports the Birmingham Mail.

Airport officials may require you to demonstrate that your device is operational by switching it on. Should your gadget be inoperable or uncharged, preventing it from powering up when demanded, you will be prohibited from carrying it onto the aircraft.

The official travel guidance on GOV.UK states: "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."

Most travellers won't have to show that their gadgets are in working order, yet they may be subject to random checks by airport security. Despite this procedure being established for some time, a number of passengers remain unaware of its existence.

Jamie Fraser remarks: "While it might seem extreme, these regulations are in place for everyone's safety. A non-functioning device raises suspicion and can lead to significant delays and potential denial of boarding. In some cases, security might even confiscate the device for further inspection."

He advises jet-setters to make sure their phones are charged before heading to the airport and not to forget a charger in their bags.

A power bank could very well be a game-changer, particularly during long hauls or when faced with unexpected hold-ups. It’s also wise to accept a paper boarding pass if your carrier offers one, just in case.

Before you fly, be sure to check what your airline and terminal expect regarding electronic devices.

GOV.UK guidance states that E-cigarettes are not allowed in hold luggage and must be stored in hand luggage.

It notes that travellers can usually carry camera equipment in their hands and hold luggage. However, restrictions may apply to specialist equipment, like professional video cameras.