How to brush Xiaomi 1S? Now suddenly I can't open the address book, dial the number and send text messages. What should I do if I click exit?

1. It is recommended that you uninstall the system security software, enter recovery (shutdown, press and hold the volume increase+power on key to enter recovery), clear the cache, and try to recover.

2. Please back up your data, enter recovery to clear all data (power off, press and hold the volume up+power on button to enter recovery), upgrade your mobile phone to the newly developed system with a wire brush, and don't install third-party system security software for the time being to see if it can return to normal.

3. If you still can't recover, please go to the nearby maintenance point for inspection.

Address and telephone enquiry: /c/service/poststation/ At the same time, nine millet homes in Beijing, Shanghai, Nanjing, Wuhan, Chengdu, Hangzhou, Xi 'an, Shenzhen and Guangzhou have maintenance capabilities. The working hours of Xiaomi House are from Tuesday to Sunday, 10 am to 6 pm.

Welcome to ask questions on Baidu Xiaomi Enterprise Platform: /c/xiaomi/