From its creation, it was owned primarily by TeliaSonera (now Telia Company), and since 21 June 2016 is now the sole property of Grupo MásMóvil, after the CNMC (regulator agency like Federal Communications Commission in Spain) authorised the purchase of 100% of its share capital.

As of June 2003[5] most of its investors were complaining about the huge amount of money they had lost in the yet-to-be-launched project, and in summer 2003 Vivendi —which faced problems of its own at that time— eventually left the group by selling its shares to the rest of the shareholders at the symbolic price of 1 €.

The remaining shareholders as of May 2005 were a number of Spanish companies with no previous experience in telecommunications (Grupo ACS at 34.8% of shares, Corporación Financiera Alba at 11.7%, Abertis at 8.4%, Fomento de Construcciones y Contratas at 7.5% and Abengoa at 5.4%) with technical support from Sonera (now TeliaSonera, a Scandinavian cell phone carrier) which owned a non-controlling stake of 32.2%.

[14] Yoigo states that it bases its commercial strategy on "simplicity, efficacy, and low cost", and on the absence of small print, to differentiate itself from competitors.

[citation needed] On the other hand, they announced the limitation of free calls in January 2008, provoking great surprise and unhappiness among customers with notable repercussions throughout digital media.

[citation needed] With the implementation of their new LTE network, Yoigo's terminals suffered some errors with notifications on various applications like Twitter, Facebook and WhatsApp Messenger.

[citation needed] In terms of access to the Internet, Yoigo commercialized a Huawei E220 modem related to a contract with a different data rate.

Nevertheless, Yoigo's CEO claimed they held a European record in bringing a cell company to market, since from the time when TeliaSonera had gained control to the actual date of launch only 150 days had passed.

[15] [16] Yoigo was born with largely sparse coverage of its own, relying heavily on a national roaming agreement with Vodafone's GSM network.

Thus, services such as fast 3G internet access were restricted to those on Yoigo's own coverage footprint, limited to the largest cities, and others like video calling were not present at all.

In April 2007 talks were started with other distributors like Carrefour and El Corte Inglés, as Yoigo is not expected to create any sales network of its own.

[17] However, the simple and cheap rates Yoigo offered (0.12 € per minute and 0.12 € connection charge at every call, at any time or number within Spain) plus the inexpensive data plans (0.12 €/KiB up to a maximum of 1.20 € a day) drew customers.

The company itself announced having tripled their expectations during the first months from launch and credited this unexpected success for the delays experimented in shipping of orders.

[citation needed] From June 2008, Yoigo abandoned this practice and began to offer terminals virtually free, but in 2012 they again stopped subsidizing new phones or smartphones, uniting the Movistar and Vodafone initiative and leaving Orange as the only operator in Spain with this type of strategy.

[21][22][23] With the intention of reducing costs, Yoigo structured itself as a shell company which operated in cooperation with several subcontracted firms: Ericsson for construction, management, and maintenance of their UMTS network; Dextra Móviles for handset purchase and logistics; Seur for deliveries; and Emergía for sales and customer service.

[24] At the time of its launch, Yoigo only offered coverage with its own 3G network in nine cities (Madrid, Barcelona, Bilbao, Valencia, Cuenca, Sevilla, Málaga, Cádiz and Palma de Mallorca).

This agreement is being researched by the CNMC, which has opened an expedited sanction of both companies to investigate whether this fusion violates the Law of Competition Defense.

Although the agreement permits the use of Movistar's network in national territory, including protocol HSDPA, it doesn't guarantee the maximum data transfer speed.

[citation needed] On 1 August 2013, it was announced that the national roaming agreement, which gave Yoigo access to Movistar's 2G and 3G networks, expanded its validity until 2016.

Yoigo will keep LTE technology in 50 provinces, but plans an extension to reach 1,163 Spanish municipalities, offering coverage to 7.5 million inhabitants.

[citation needed] Any normal process is carried out rapidly and efficiently, however, if intervention by their billing department is necessary, responses become slow, laborious and even defensive.