1. To convert Apple App from English to Chinese, you need to set the language of the mobile phone system to Chinese. 2. Click Settings-General-Multilingual Environment-Language. 3. Then select Simplified Chinese or Traditional Chinese in the language and confirm the completion. Then the language of the mobile phone system will be changed to Chinese, and when you enter the app, you will find that everything has become Chinese. There should be a setting on the main interface of other iPhone. Click it to enter the settings menu. Then click General to enter the system setting interface; Then click International to enter the multi-language setting interface; Then click Language to enter the interface language selection setting; Click Simplified Chinese, and then click Finish in the upper right corner of the screen. It will become a Chinese interface after a while. Extended iOS is a mobile operating system developed by Apple. Apple announced this system for the first time at Macworld conference on June 9, 2007. Originally designed for iPhone, it was later applied to iPod touch, iPad, Apple TV and other products. IOS, like apple's Mac OS X operating system, belongs to a commercial operating system similar to Unix. Originally this system was called iPhone OS. Because iPad, iPhone and iPod touch all use iPhone OS, it was announced at the 20 10WWDC conference that it was renamed as iOS(iOS is the registered trademark of Cisco's network equipment operating system in the United States, and Apple's renaming has been authorized by Cisco). 20 16, 1 year 10. In October, with the release of version 9.2. 1, Apple fixed a vulnerability that existed for three years. The vulnerability is that when an iPhone or iPad user accesses a network with a mandatory entrance in a hotel or airport, the login page will display the terms of use of the network through an unencrypted HTTP connection. After accepting the terms, users can surf the Internet normally, but the embedded browser will share unencrypted Cookie with Safari browser. Using this shared resource, hackers can create their own false forced portal and associate it with the WiFi network, thus stealing any unencrypted Cookie saved on the device.