2008-2010 was a difficult time for Sony Ericsson. In late 2008, it released its first Windows Mobile device, the Xperia X1. A year later, its first non-UIQ Symbian phone came out, the Idou. Another year and the Xperia brand underwent a brain swap and it was now a series of Android phones. The first was the Sony Ericsson Xperia X10. It made its debut on April 1 2010, launching on the NTT DoCoMo network and it became the fastest-selling smartphone in the carrier's history - reports from the time indicate that the X10 sold 120,000 units in three weeks, beating even the iPhone 3GS (32GB)....
Source: https://www.gsmarena.com/flashback_sony_ericsson_xperia_x10_fixes_past_mistakes_by_choosing_android-news-43375.php
