Both me and my G/F are on O2 online. I have a contract and she has pay as you go. My contract is 11 months old. Her phone is refusing to send txts and might need to be replaced. I can send txts ok so dont think its the network as she hasnt been able to send texts for about 1.5 days now. Whats the cheapest O2 phone i could get. Thought about upgrading mine and giving her mine or the new phone. Are there any cheap O2 pay as you go phones about that i could just her sim card in??