It would be great if someone could help me with this problem as it looks like virgin media are not going to call me back.
My phone was water damaged and after drying out for a few days it booted back up but without sound and videos wouldnt play correctly. Everything else seemed to be fine including all connections.
Anyway, i bought a second hand s4 mini on ebay with a broken screen and took its logic board (motherboard) and put it in my phone. Now everything works perfectly well except i can only connect to virgin on a 2g network (gsm only).