Martin Lewis has urged millions of Brits to check if they can save money on their mobile bill by sending a simple text.

The MoneySavingExpert.com founder published a new video to X/Twitter where he explained how to find out if you're out of contract with your current provider. It involves texting the word INFO to 85075. This is a free text to send.

You'll get a message back which will explain if you have any exit fees to pay if you leave your supplier. If you're free to leave without incurring a charge, then you could save money by switching elsewhere.

Martin said: “Why not text ‘info’ to 85075. It’s free and it will tell you whether you’re one of 14 million people in the UK who are currently out of contract and therefore free to switch and can likely save a shed load.

"I should note there are a few times it doesn’t work, such as if you’ve got a contract where there’s multiple phones in a household, in which case, if you’ve been with the same provider for more than two years, you’re likely out of contract now."

Martin explained how you can normally find the "best deals" by using comparison websites. He added: "You can currently get 100GB of data a month SIM, that’s a little SIM that goes in the back of your phone, just switching that, for less than £10 a month."

The warning from Martin comes as millions of broadband and mobile customers will be hit with bill rises of up to 8.8% in another cost of living blow for struggling households. Under current rules, telecom companies are allowed to increase prices mid-contract in line with inflation, plus up to 3.9% extra on top of this.

Most use Consumer Prices Index (CPI) inflation data for December, or Retail Prices Index (RPI) for January to decide their increases. Ofcom has announced it wants to ban "confusing" mid-contract price rises that are linked to inflation - instead, firms will have to set out increases in "pounds and pence" so customers can better understand future bills.

A final outcome from a consultation will be published in the spring, then if the proposals are given the green light, the new rules will come into force four months later.