For the whole of 2013, 35 percent of the smartphones sold in Taiwan had a 5-inch or larger screen, a sharp increase from only 7 percent in 2012, the research firm said.

The high penetration rate put Taiwan in third place behind Hong Kong and Singapore among countries that favor smartphones larger than 5 inches, IDC said.

Last but not least, ASUS is going to unveil their ZenPhone next month, which screen sizes are ranging from 4-inch, 5-inch, and 6-inch that furthur prove the trend of big-screened smartphones.