Find Android users in your contact list

Question

My application has the ability to share its content with friends in the user's contact list.

However, since it is only available to Android users, is there a way to find out that people in my contact list have an Android device?

That way, I could present a list of filters to my customers, who can sometimes have thousands of people in their contact book.

I thought about filtering only Gmail addresses, but this is not a good sign that the person owns Android. I know what Google can say because they bind devices to Google email addresses (they even know which device and Android version are used by everyone), but how can I say?

Answer 1

I assume that you want to use content from your application on the phone of user A in your application on the phone of user B? Therefore, you do not want to use a third-party application (such as email) to share your content.

I do not think that you can get all the contacts that also use your application directly from your contact list. If the scenario described above is correct, you can do this, for example, for example. WhatsApp or similar applications.

They upload the phone’s contact list to their servers and compare them with their user database. This way, they can identify all the users in your contact list who also use the application. You can do this in a similar way to identify all the contacts on the phone of users who also use your application.