Smarty SIM Only - 18GB 5G Data - Unlimited Mins & Texts, EU Roaming (12GB) - Monthly Rolling Plan, Cancel Anytime + GBP12 TopCashback

SIM only is just that, where you only pay for the minutes, texts, and data you use on your sim-card. You will have to supply your own device i.e phone/tablet to insert the sim-card into, hence why it's called 'sim only'