The guide reveals that Three is the only major mobile operator that doesn't lock handsets to its network, meaning that customers can swap SIM cards in and out of their handset at their leisure. Giffgaff also offers unlocked handsets, but was not included in Ofcom's guide. Wifi Password Hacker Software Free Download Windows 10. How To Unlock An Iphone Passcode Without Restore on this page. 'We’re confident in our network and want to provide the best experience to those that purchase their device from us,' said Danny Dixon, director of customer strategy at Three. 'We feel that this gives flexibility and choice in the hands of the customer, helps the environment, and it has been very well received by consumers across the board.' EE, (including Orange and T-Mobile), locks all of its handsets and does not allow them to be unlocked until 6 months after activation.