I very rarely get called on my mobile - to be honest I rarely receive phone calls and that pleases me as I don't like phones - but I'm currently on stand-by in case a friend goes into labour as I'm to look after her toddler. Her due date isn't for three weeks but she has been early before so I'm trying to remember to take my mobile everywhere with me and to keep it charged. (Possibly another reason I don't receive many calls is that I never know where my phone is so it could well be ringing away merrily.) (No, actually, that's not likely as I don't have many friends.)
Which is all a long way of saying that my heart nearly stopped just now when my phone rang.
P.S. It wasn't a call to action but Martin checking I'd be in Zac's tonight. I almost said, 'I will be as long as I don't get many more calls like this.'