Import your list by uploading the CSV or TXT file, and give it a name
Review your list to make sure there are no errors, then hit Upload & Create
Create a mobile app Custom Audience
Register your app with Facebook, then set up the SDK so you can track your users within your app.
Select “App Activity” as the custom audience source.
In the Source dropdown, select “App.”
In the App Events section, decide how you’ll qualify people for this custom audience. For example, you might target everyone who opened the app, only those who made a purchase, or some other app-specific event.
Give your custom audience a name
to make it easy to identify and track.
Hit Create Audience and Facebook will do the rest.
Create a custom audience from website visitors
Choose “Website” as the custom audience source
Set up the rules for your website phone number lead custom audience. This is where you define who you will target – for example, all website visitors, only those who visited specific pages, only those who stayed for a certain period of time, or a range of other options based on your website traffic.
Give your website custom audience
a name. This will make it easier to identify and track in the future.
Hit Create Audience what’s the solution? and Facebook will do the rest.
The downside to this manual approach is that sault data custom audiences are not automatically updated. This means you will have to manually upload data for new customers as you acquire them, which will be time-consuming.