@Julie31
You cant, as when you upgrade you also have to change your airtime plan..
Your other option is to buy a phone out right from John Lewis, Amazon or the manufacturer and take their instalment plans..
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iPhone 15 Pro Max - o2 and Spusu
Xperia 1V - Spusu
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This is not customer services and we dont have access to your account
I do not work for o2 or any VMo2 /Telefonica/Liberty Global Company
