reference
https://www.jianshu.com/p/e540f34cec07
https://bbs.pediy.com/thread-246081.htm
download
https://download.csdn.net/download/qq_26914291/11812264
use
test environment
Model: oppo r11, nubia z17mini
Android system: 7.1, 6.0.1
ColorOS: v3.1, nubia UI v6.0