The UK’s telephone infrastructure is undergoing a massive change, with homes being moved off ageing copper cables and switched to something called Voice over Internet Protocol (VoIP) calling instead. The changes are being made to improve call quality, add new features, and remove the need to rely on ancient wires that simply can’t keep pace with our needs.

Most homes won’t notice any difference when switching over to VOIP calling with this service simply using a broadband connection to keep in touch, but there have been worries about more vulnerable users, especially if there are issues with power.

While the UK’s electricity network was relatively stable last year, major events such as Storm Darragh caused significant disruption, with around 70,000 residents experiencing a power outage as a result.

As the name suggests, broadband phone calls need internet access to work, and that means if there’s a loss of power, people won’t be able to use it or get in touch with loved ones.

For the majority of people, that won’t matter as calls can still be made using smartphones, but there is a worry about those living in network dead spots or who simply don’t have a mobile.

Luckily, it seems that worry has been fixed with Vodafone saying it is launching a “revolutionary” wi-fi battery back-up device that will supply power to the router should the worst happen.

This gadget – which will be dished out to vulnerable customers for free – has the ability to keep the router’s lights flashing for up to seven hours after the power goes off.

And don’t worry if you don’t use Vodafone as it’s also been confirmed that this network will be supplying the unit to BT and other rival broadband and phone suppliers.

Along with supplying power, Vodafone boasts that it is also much more user-friendly than traditional wi-fi battery backups, which can be big, heavy, difficult to set up and work for an absolute maximum of two hours. The new Vodafone box is just 4ins square by 2.5ins, lightweight, and can provide power for between 4-7 hours, depending on the type of router.

Speaking about the boost, Rob Winterschladen, Consumer Director, Vodafone UK, said: “We are committed to ensuring our customers stay connected no matter the circumstance. Our innovative Broadband Battery Backup device for WiFi, offering an industry-leading 4 to 7 hours of connectivity, is a testament to that promise.

“As we manage various power cut episodes across the country and approach the significant PSTN switch off in early 2027, we recognise the vital importance of safeguarding landline-dependent customers. That is why we are proud to work with other leading telcos to ensure everyone has access to a robust solution which delivers peace of mind and uninterrupted connectivity.” 

And Lucy Baker from BT added: “BT has remained committed to providing solutions for customers with additional needs. Following an extensive review of the market we are pleased to bring our customers the latest in broadband battery backup technology.”

If you are not a vulnerable customer but still fancy the idea of this device, Vodafone is also selling it for £150.