BY Yeoun Je-Hyun , SEOUL, KOREA - A group of smartphone makers, including Pantech, Sony, and LG Electronics, are gearing up again to promote new product marketing. After holding their breath due to the business suspension of major telecom operators and the sinking of the Sewol ferry, major smartphone makers are taking steps to keep Samsung Electronics from being the sole lead in the smartphone market. Pantech and Sony will open fire first. Each will release its new strategic smartphone model—Vega Iron 2 and Xperia Z2—on May 2. Vega Iron 2 features a metallic design. Compared to its predecessor model which has a 5-inch screen, it has a bigger screen (5.3 inches) and a more powerful AP (SnapDragon 801). Other specs include a 3-GB RAM and a 3,140-mAh battery, emulating those of Galaxy S5. Sony is set to knock on the door of the Korean market again with its brand-new Xperia Z2 which it showed off first at the CES 2014 in January 2014. Armed with an ultra-thin design and water and vibration-proof function, the Xperia Z2 uses aluminum and reinforced glass materials. With an 8.2-mm thickness, it is mounted with IP58-class water proof function. In other words, it can be used in water depth of 1.5 meters for 30 minutes. Source: Korea-Times