Go to My Viking. You will be able to see how much calling credit, mobile data, texts and free calling minutes to other Mobile Vikings you have left.
In the My Viking app: thanks to the My Viking app you have a continuous and real-time overview of your remaining calling credit, usage history, contacts and so much more. You can download it here:
iOS: you need iOS 10 or higher. Android: you need Android 5.0.0 or higher.