What is the use of Google settings on Huawei mobile phones?

It is a setting that allows users using mobile phones or other mobile devices to use Google-related software.

Google Mobile Services (GMS) is a suite of Google-branded applications and cloud-based services. Additionally, GMS is not part of the Android Open Source Project (AOSP), nor is it simply an open source version of Android. Therefore, Android smartphone manufacturers need to obtain a license from Google to legally install GMS on their Android devices.

Extended information:

GMS consists of two parts - a popular package and an add-on package. To obtain a license for GMS, a popular bundle package needs to be pre-installed by the Android device manufacturer, often called a preloaded app.

Popular GMS bundled application packages include:

Google Search

Google Chrome

YouTube Website

Google Play Store

Other GMS bundled app packages include:

Google Drive

Gmail

Google Duo

Google Maps

Google Photos

Google Music Player

By using all of these apps, smartphone manufacturers can create new features for these specific apps The program creates a seamless experience across different devices.

Baidu Encyclopedia-Google Mobile Services