Until the EE takeover, Orange UK operated GPRS, EDGE and 3G HSDPA services. This has since been merged with T-Mobile's network. Orange's 2G network covered 99% of the UK population, and was the largest integrated 3G/2.5G network in the UK. Orange claimed in 2008 that it spent up to £1.5 million per day investing in its network. In 2009, Orange UK decided to outsource its mobile network. Therefore, in March 2009, Nokia Siemens Networks was chosen to manage, plan, expand, optimise and provide maintenance services for the Orange UK 2G/3G mobile network for the next five years. Currently, Orange customers are only able to access the UK's biggest 3G network along with EE's standard 2G network. Customers that wish to use EE's 4G network, have to upgrade to EE from their Orange plan.