Completar frases Mobile Phone networksVersión en línea Complete the text using the topical vocabulary on Mobile Phone Networks por Yuliya Pronina 1 In Britain there are several mobile phone including Vodaphone , O2 , T - mobile and Orange . There are also like Virgin Mobile who use the network of another company . When you buy a phone , you have a choice of . The most popular is 'pay - as - you - go' , with customers paying for their calls in advance . They can up their accounts in shops , over the internet , and at cash machines . Heavy may prefer a . They pay a amount every month , but the calls are much cheaper than they are for pay - as - you - go customers . Mobile phones usually come with a SIM card already . If you take the phone abroad , you may be able to use it on a local network . This is called . It can be expensive , and it may be cheaper to buy a foreign SIM card .
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