An App is not required for our WiFi/4G calling. So long as you have a compatible device and crucially, your mobile data settings are configured correctly, the facility will be available.
You'll need an iPhone 6 or later model phone, or a Samsung Galaxy S7 or later, both with up to date operating systems.
To view a guide on how to check and manage your data settings, click here: https://www.plan.com/apn-settings
Article is closed for comments.