Orange is offering a monthly mobile broadband package for £4.89 – the cheapest offering so far.
The offer, which is available to existing Orange customers, is an 18 month contract with a usage limit of 500MB and has download speeds of up to 3.6Mbps.
The network has also introduced a new kind of mobile broadband package that gives users unlimited downloads between midnight and 9am for £12.72 a month.
"We are committed to building our mobile broadband portfolio so it provides customers with a range of flexible solutions to suit the lifestyle they choose," Orange UK director of broadband and home Asif Aziz commented.
"We also want to ensure we reward existing Orange customers, and believe that be offering them the cheapest pay monthly mobile broadband on the market great value for money."
The company has announced plans to alert their customers via text when they are approaching their bandwidth allowance, after a study by Moneysupermarket found three quarters of mobile broadband users were risking fines because of a lack of awareness about data limits.