GSI修复GMS方案

Method 1:
If you have root just go to system/product/priv-app/PrebuiltGmsCore and install that apk like update or in TWRP extract that and paste in your internal, then reboot and install (by @.Santiago013)

翻译：

如果您的设备有ROOT权限，您可以尝试在 system/product/priv-app/PrebuiltGmsCore 安装GMS APK 然后重启设备尝试

Method 2:
Get gms apk here (https://www.apkmirror.com/apk/google-inc/google-play-services/) and install it

翻译：

获取GMS APP的渠道为 https://www.apkmirror.com/apk/google-inc/google-play-services/

修复GMS在GSI镜像上的作用，主要是为了能够修复SMS短信或者信号丢失