Apple's iPhone Duo, priced from 436,370 yen, is set to launch with a 2-year return program for MNP, new, and upgrade customers at 239,690 yen. The device's CPU performance compares favorably to the iPhone 18 Pro, with Geekbench 7 scores being revealed. Preorders will begin Friday, and analysts see it as a crucial element for Apple stock investment. The iPhone Duo is expected to challenge the iPhone 18 Pro and dominate the foldable smartphone market.