Yahoo Japan Corp. said it plans to accelerate development of mobile-device applications as the number of smartphone users rises.

"The one thing I've decided is to make smartphones our priority," Manabu Miyasaka, 44, who will become CEO at the weekend, said in Tokyo on Thursday. "That market will grow much faster than the PC market."

Miyasaka is replacing Masahiro Inoue, 55, as part of a management overhaul that includes creating a new position to oversee smartphone services.