In July 2014, Microsoft Mobile announced the end of the X range after just five months (as well as Asha and Series 40) in favor of solely producing and encouraging the use of Windows Phone products.

[3] Despite choosing the Windows Phone operating system for its Lumia series of smartphones, Nokia had experimented with the Android platform in the past.

[4] On 13 September 2013, the New York Times writer Nick Wingfield revealed that Nokia had been testing the Google Android operating system on its Lumia hardware.

[7] The Chinese technology site CTechnology revealed that despite the announced merge of Nokia with Microsoft, development of the Asha on Linux project was continuing until November 2013 and 10,000 prototype units had been manufactured by Foxconn, containing a Qualcomm Snapdragon 200 8225Q chip.

[11] A 14 December 2013 report by CTechnology claimed that the device development had been halted, along with an Android-based 7 inches (18 cm) Snapdragon 400 tablet.

[18] A leak on the ITHome technology website showed a blurred image of the phone, and the app drawer of its UI in operation, confirming it to be a dual-SIM device.

[23] On 13 January 2014, a press photo showing the tile-like UI of the home screen was leaked,[24] and was accompanied by a screenshot of the Asha platform's Fastlane-style notification centre the next day.

[27] On 23 January 2014, Nokia sent out invitations to its press event at Mobile World Congress on 24 February 2014, where the device would be unveiled, if it wasn't cancelled.

[33][34] The Wall Street Journal's sources confirmed that Nokia was going to reveal the device at the MWC in Barcelona at the end of February 2014.

These additional devices, one named Nokia XX, would be released during May or June 2014, and were claimed to be out of beta and would possibly receive FCC certification.

[36][37] Nokia's social media accounts on Twitter and Facebook had their colour changed to green, which was suggested by WPCentral to be a veiled reference to the Android operating system.

[42][43] On 18 February 2014, the Hungarian technology website tech2.hu claimed the device was under mass production at Nokia's Komárom plant in Hungary.

The phone also contained the Lumia-inspired UI design, in addition to the Nokia suite of mobile applications as previously leaked.

[46] A third phone, the Nokia XL, was released, with a larger screen, front-facing camera, rear flash and greater battery life.

[48] On 24 June 2014, Microsoft launched the Nokia X2, which featured 1 GB of RAM and a Qualcomm Snapdragon 200 chipset with a dual-core 1.2 GHz Cortex-A7 CPU.