While the NDEF standard (NFC Forum) permits multiple NFC records, the Android and iOS systems only support the handling of the first one.
As an alternative solution to this issue, we recommend using our online service, Unit.Link, available at https://unit.link
It's a simple and easy way to create a landing page for all your links to your social media, phone numbers and so on.
This way, you only need to write one link on your NFC chip.
Additional note: Apple restricts their background reading to basic NFC records such as URL, TEL, SMS, ... (more info)