T-Mobile USA has decided to discontinue sales of the Sidekick family of devices starting on July 2. A T-Mobile spokesperson said to Phone Scoop in an email, “As T-Mobile looks to further innovate and raise the bar for the next iteration of the T-Mobile Sidekick, as of July 2, the Sidekick LX and Sidekick 2008 will no longer be available through T-Mobile, including retail stores, care, telesales and online. While we work on the next chapter of our storied Sidekick franchise, T-Mobile will continue to provide our loyal Sidekick customers with product service and support. Stay tuned for exciting updates in the months ahead, which we expect will provide customers with a new and fresh experience.” T-Mobile has sold Sidekick devices for more than six years, with the last new version released in 2009. Sidekicks were known for their swivel-open displays and QWERTY keyboards. Most Sidekick devices were developed by Danger and manufactured by Sharp. Danger was acquired by Microsoft in 2008, and eventually became part of the team that developed the Kin line of devices for Verizon Wireless. Microsoft recently announced that it is halting all development and investment in the Kin line. Now that T-Mobile has end-of-life’d the Sidekick line, it is clear that change is taking place inside Microsoft’s mobile business. T-Mobile temporarily halted sales of the Sidekick devices in October 2009 when the company lost customer data. It resumed sales in November 2009. Starting tomorrow, July 2, Sidekick devices will no longer be available.