I've seen questions about caller ID being posted before but wasn't sure if the solutions applied to my situation. Recently I was informed my pay monthly sim only Virgin mobile contract was being changed to an o2 contract. The switch seemed to go fairly smoothly, all done on o2's end with no input from me. Since being switched all calls to my phone come up as "unknown number", even ones in my contacts. This only applies to incoming calls not text messages or outgoing calls. Because all the incoming calls are unknown numbers I cannot phone back if I miss a call and have no idea who phoned. Nothing else about my phone or contract has changed, it is just the provider. Is there a solution to this?
