Apple has launched the iPhone Duo, its first foldable phone, at Rs 2,99,900 in India. It opens to a 7.6-inch display with a 5.4-inch screen outside, runs the A20 Pro chip, and carries a battery on each side for up to 24 hours of use. Touch ID replaces Face ID, and the phone is eSIM-only. Pre-orders open on October 16, with sales from October 23.