Do I have to pay extra costs if I use mobile refuelling via the app? Premium Plus August 06, 2020 13:51 There are no additional charges for mobile refuelling. You always pay the current fuel price as stated on the price board or at the pump. Depending on your mobile phone contract, your mobile provider may charge a fee for your 4G connection. Related articles I started a transaction but didn’t refuel. What will happen now? How does mobile refuelling work exactly? Which payment or fuel cards can I use in the app? Why was €200 reserved on my account when I refuelled? What do I need to do to save Smiles via my mobile transactions? Comments 0 comments Please sign in to leave a comment.