[5] In January 2014, the network in the United Kingdom started offering 4G service, for its pay monthly and SIM only customers at no extra cost, extending the service to pay as you go customers in July of that year.

[10] The service, which was Ireland's second MVNO (the defunct Cellular 3 having been the first), used the O2 network but operates separately.

Since August 2018, Tesco Mobile customers can access Three masts, which means that they can now avail of 4G as well as increased 3G coverage.

In December 2009, Tesco Stores SR announced that it would enter into a joint venture with Telefónica Slovakia to offer mobile telecommunications services.

In May 2013, Tesco Stores ČR a.s. announced that it would enter into a joint venture with Telefónica Czech Republic to offer mobile telecommunications services.