Mobile phone giant Vodafone stepped up its expansion in Europe on Monday by unveiling a £6bn deal to buy Spanish cable operator Ono.

The acquisition of Ono, which offers high-speed broadband and pay TV to 1.9 million customers in 13 regions of Spain, builds on Vodafone's purchase of Kabel Deutschland for around £6.5bn last summer.

Vodafone's latest swoop comes as it looks to spend some of the proceeds from the $130bn (£78bn) sale of its stake in US mobile phone operator Verizon Wireless.

Vodafone is growing strongly in emerging markets such as India, but its European business has been weighed down by economic conditions, competition, and regulator-imposed price changes.

Furthermore, the sector's focus has been shifting towards "quad play", which involves providing bundles of phone, broadband, mobile and pay-TV services.

Vodafone chief executive Vittorio Colao said: "Demand for unified communications products and services has increased significantly over the last few years in Spain, and this transaction will accelerate our ability to offer best-in-class propositions in the Spanish market."

Ono has a current reach of 7.2 million homes – about 41% of all homes in Spain – providing its customers with broadband speeds in excess of 200 Mbps and a pay-TV service through TiVo.

Its network will complement Vodafone's fibre-to-the-home build programme, which will be refocused towards areas where Ono has limited or no network.