I lost my O2 Billpay phone yesterday. I have no insurance on it or am not entitled to an upgrade. Stupid me, I know that. Anyway a friend at work has kindly offered to give me another phone that he no longer uses. Problem is his phone was through Vodafone. I am picking up a replacement SIM from O2 today. I'm assuming I can't use it in this phone.
Therefore can I ask what are my options in this situation. If I have to buy an O2 phone I will, but could do without this extra expense.
Many thanks