Yes, you can. However, calling and texting only work with direct dialing. This means calls must be placed using a phone's built-in calling application.
If you are interested in using your tablet device for calling and texting, you'll need to download a VoIP application, like WhatsApp or Viber.
Services like WiFi calling and VoLTE will not work. Your tablet's calling functionality will rely on the capability of the VoIP application you're using. For example, if you're using an application that does not include a Voicemail option, unfortunately, you will not have access to voicemail messages, even though the FreedomPop SIM card offers voicemail services.
For full calling functionality, use the FreedomPop SIM with a compatible cellular device. Tablets used with the FreedomPop SIM card will receive an internet connection.