Samsung plans to release a Galaxy smartphone next year with a display that wraps around the edges so users can read messages or monitor stocks while looking from an angle, according to two people familiar with the plans. The phone will use an upgraded version of Samsung’s technology called Youm, currently featured in the curved Galaxy Round handset, the people said, asking not to be identified because the plans haven’t been released. The three-sided display may be used in the S or Note series of premium handsets or may be the first in a new line, the people said. Samsung plans to have each side of the display operate independently. The world’s largest maker of handsets is fighting with Apple to introduce innovative devices as they brace for a slowdown in the high-end smartphone segment, where Samsung sells about one of every three devices.