Is it necessary to use mobile phone traffic for iphone backup icloud? And what is the specific use of icloud?

Iphone icloud is automatically backed up in WiFi state. In the WiFi state, backup naturally does not require mobile phone traffic, unless you manually back up the data yourself, which requires traffic.

And the specific use of icloud is equivalent to a network disk, which helps you back up data, information and applications and realize the enjoyment of all platforms in Apple.

ICloud is a cloud service provided by Apple, which allows users to store 5GB of data for free. On 2011May 3 1 day, Apple officially announced that it owns iCloud products for the first time. Apple claims that iCloud will replace MobileMe. iCloud is completely rewritten on the basis of the original MobileMe function, providing the original mail, calendar and contact synchronization functions. On June 6, 20 1 1, Apple CEO Steve Jobs hosted the World Developers Conference (WWDC) and officially released cloud services iCloud, iOS 5 and OS X Lion. The function of iCloud is to store content, including purchased music, applications and e-books, and push them to all devices.