GMS is a service system in mobile phones.

the full name of p>GMS is GoogleMobile Service, which means Google mobile service.

GMS currently provides services such as Search, Search by Voice, Gmail, Contact Sync, Calendar Sync, Talk, Maps, Street View, YouTube and Android market (changed to Play store on ics).

When users use Google services, Google can embed advertisements into various Google services. For example, when users use Google Maps, they can find advertisements that search for place names.

when using Google mobile search, it goes without saying that there are advertisements. Google actually takes users' attention in exchange for advertisers' money. Moreover, the Android smartphone operating system is actually Google's initiative to put its services on the mobile phone, further consolidating its market position.

Extended information:

According to GMS, Google gives different degrees of authorization to Android phones, and divides the mobile phone manufacturers equipped with Android system into three levels:

1. Free use of Android operating system, but without embedded GMS;

2. Some GMS services are embedded, but the mobile phone cannot bear the Google trademark;

3. All GMS services are embedded, and Google trademarks can also be used. If Google GMS service is built into Android phone, it is equivalent to a product officially certified by Google.

in mainland China, at present, all licensed mobile phones can't pass GMS authentication. GMS authentication is not as easy as imagined. Google should consider whether to authenticate according to the strength of the manufacturer and regional factors.

for manufacturers, GMS is not only an effective means to gain more Google service rights, but also an effective means to open brand differentiation, that is, identification. It can be seen that the comprehensive ability of a manufacturer can be simply judged from whether it has passed GMS certification.

Baidu encyclopedia -GMS