O2 is offering free fixed line broadband for Apple iPhone customers purchasing the 3GB internet tethering bolt on before December 31.
The bolt on is priced at £9.79 per month enabling customers to connect an iPhone to a laptop, which will operate like a mobile broadband dongle.
Alternatively, customers can claim £7.34 per month for O2 Home Broadband packages.
O2 head of consumer mobile Peter Rampling said: “This is a brilliant deal for people who want tethering and home internet. Effectively you get both for just £9.79 a month. Total Connectivity means our customers will always be connected, at home and on the move.”