Here is our advice to find the most phone numbers possible with File Upload
1) Map the regular LinkedIn URL (not the sales navigator URL) with the data field. If you do not have a LinkedIn URL, please use map Company Name with Data and add the full name.
2) Once you have found your numbers, create a new file with all the rows where you do not find phone numbers, and find emails for them by using the find email file upload (or you already have them!)
3) Once you have the emails, you can upload your new file filled with email addresses to find phone numbers, but this time, you will map the email address with the data field.
This way, you can improve your match rate by 20%