Samsung Electronics Co. will release its Galaxy S5 smartphone by April and is studying using eye scanner technology for the first time as it readies the high-end handset to compete with Apple Inc.’s iPhones. The S5 will be paired with a new wearable device that will be an evolution of the Galaxy Gear smartwatch, Lee Young Hee, executive vice president of the company’s mobile business, said in a Jan. 6 interview. Samsung, which posted profit this week that missed analyst estimates, will debut the new products together as it also boosts marketing of tablet computers. “We’ve been announcing our first flagship model in the first half of each year, around March and April, and we are still targeting for release around that time,” Lee said. “When we release our S5 device, you can also expect a Gear successor with more advanced functions, and the bulky design will also be improved.” Samsung, which sells one of every three smartphones globally, is adding new features and models to fend off Apple in the high-end market and Chinese makers luring budget customers with handsets for $100.