I got a new Xperia Z3 Compact just over a month ago on o2. I've just had a look at my settings for call forwarding, and for the options 'Forward when busy', 'Forward when unanswered' and 'Forward when unreachable' there's a phone number already set to forward to which I don't recognise. It's a full +44 one. I've searched all my contacts (haven't added or deleted any recently) and given the number a Google and a search in Truecaller to see if it's a known scammer or anything, but nothing has come back.
I can't seem to change the number as it gives me the message 'Unexpected response from network' when I try, although I can set each option to 'disabled' for the moment.
I'm obviously a bit nervous about giving the number a ring, and a bit paranoid as to why the number is there in the first place. Would anyone be able to shed some light on how it might have ended up there?
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