1pMobile is a pay as you go network, and in many ways is much like any other. So as you’d expect, you pay for credit with top-ups and you’re only charged for what you use. You pay 1p per minute to make calls to UK landlines and mobiles, 1p per text and 1p for 1MB of data. Another interesting point of difference from some networks is that the pay as you go credit you add doesn’t expire.Once you’ve joined for £10, as long as you top up every 120 days you’ll retain all your credit and keep your account active. There’s no minimum top-up.