British Gas customers are being asked to take urgent action after 'many' reports of issues with the devices.
Smart meter users are reportedly unable to check their energy usage on the provider's app, website, and in-house display. According to Martin Lewis' website MoneySavingExpert, some customers have been experiencing these faults for a year.
As they cannot check usage digitally, the MSE experts are now urging customers to take meter readings manually to ensure that they aren't overspending, reports the Chronicle.