Amazon is gearing up to release its long-rumored smartphone later this year to directly compete with offerings from Apple and Samsung, reports The Wall Street Journal. According to the report, the company has been showing off prototypes of its handsets to developers in San Francisco and Seattle in recent weeks, with Amazon likely announcing the phone by the end of June and launching it by the end of September. The people said Amazon hopes to distinguish its phone in a crowded market with a screen capable of displaying seemingly three-dimensional images without special glasses, these people said. They said the phone would employ retina-tracking technology embedded in four front-facing cameras, or sensors, to make some images appear t
