Adobe has added a new feature to the Lightroom Mobile app on iOS and Android, which it is calling "RAW" HDR capture. Instead of capturing and saving a single RAW file, it captures three at different exposures and then automatically align, merge, deghost, and tonemap them into a single "RAW" HDR file. The resultant file has greater dynamic range and also low noise. The reason I put RAW in quotes is because by definition this isn't RAW. A RAW file is the raw sensor dump, which isn't altered or processed in anyway by the camera software. It's what the sensor sees and the only thing...
Source: http://www.gsmarena.com/lightroom_mobile_adds_raw_hdr_capture-news-23821.php