Can I use it to hide contacts N or link to messages?
Google Partner Setup is an application that works with Google products. This is considered to be a system application and it's necessary to have it installed on your device. However, you can't use it to hide contacts. You can use the recommended apps for this kind of procedure. Visit the search results from Google Play to obtain apps that can hide contacts: https://play.google.com/store/search?q=hide+contacts&c=apps&docType=1&sp=CAFiDwoNaGlkZSBjb250YWN0c3oFGADAAQKKAQIIAQ%3D%3D:S:ANO1ljJTRO8