Vodafone pay as you talk simcards.When you recieve you vodafone sim card dial to get your mobile phone telephone numberand to register your sim card call 17298 this is the vodafone networks pay as you go line.If you need to top up then a etop up card is supplied so call 2345 and they will ask for this unique number as this is for your mobile phone only and will be needed everytime you want to top up.Top ups can be purchased via credit card over the vodafone network top up line or in shops or mobile phone stores at different amounts.Once you have registered your vodafone sim card to your phone you can choose between the smart plus plan or the smart step tariff.Please refer to vodafones website or ask the operator when registering handset or toping up.A new vodafone sim card is a great idea if you want to change network or just updating an old phone which is not on contract.Please note make sure your phone is available to take this Vodafone network as your phone may need what is called unlocking before you can change mobile phone network and use a different mobile phone sim card. How do you top up You can TopUp your credit in three following ways Via Debit or credit card To use your debit or credit card to TopUp simply register your card details with pay as you talk on line services, or by phone. Following registration you can then use pay as you talk on line services to TopUp or call the Vodafone pay as you talk creditline on 2345, free from your pay as you talk phone, whenever you need more credit. Via Vodafone's E-TopUp Swipe Card This is a simple, secure and smart way to TopUp your mobile phone. Just one swipe and you can use your topped up phone credit. Simply pick up your E-TopUp Swipe Card and leaflet in a compatible store. You can TopUp your phone in most newsagents, convenience stores, retailers and petrol stations.