Apple's latest iPhone 7 went on sale Friday in South Korea both online and offline.

Figures show that preorders for the new phone are more than double the number for the iPhone 6.

Industry experts say sales were further boosted by users of Samsung Electronics' Galaxy Note 7 phones, who switched the product for the new iPhone due to Samsung's massive recall triggered by faulty batteries.

Apple's new Apple Watch Series 2 also hit shelves on Friday.