<Li> At CES in January 2009, Palm, Inc. announced its new Pre smartphone would be available with an optional inductive charger accessory, the "Touchstone". The charger came with a required special backplate that became standard on the subsequent Pre Plus model announced at CES 2010 . This was also featured on later Pixi, Pixi Plus, and Veer 4G smartphones . Upon launch in 2011, the ill - fated HP Touchpad tablet (after HP's acquisition of Palm Inc .) had a built in touchstone coil that doubled as an antenna for its NFC - like Touch to Share feature . </Li> <Li> Nokia announced on September 5, 2012, the Lumia 920 and Lumia 820, which supports respectively integrate inductive charging and inductive charging with an accessory back . </Li> <Li> March 15, 2013 Samsung launched the Galaxy S4, which supports inductive charging with an accessory back . </Li> <Li> July 26, 2013 Google and ASUS launched the Nexus 7 2013 Edition with integrated inductive charging . </Li>

When did wireless charging come out for samsung