According to the search results, the newest Samsung Galaxy phone is the Galaxy S23 series. The Galaxy S23 series includes the Galaxy S23, Galaxy S23+, and Galaxy S23 Ultra, which were released in 2023. The Galaxy S23 series features a superior camera, improved processor, and brighter display. The Galaxy Z Flip5 and Z Fold5 are also among the latest Samsung Galaxy phones. The Galaxy Z Flip5 is a foldable phone with a zero-gap Flex Hinge, Gorilla Glass Victus 2, and IPX8 water resistance. The Galaxy Z Fold5 is also a foldable phone with upgraded hardware and software of Snapdragon® 8 Gen 2 Mobile. Samsung has dozens of models across different series, but the Galaxy S23 series is the latest flagship lineup refresh.