Jigjag
Your binmen sound quite efficient without being 'jobsworths' - highly commendable!
Glad you liked hearing about the 'wireless', a real step back in time. He also talked about buying my husband, many years ago, a 'transistor' for Christmas. My children were totally baffled by this, of course.
I think context is everything with 'mobile'. If, say, you had ordered something in a shop and they said they'd let you know when it was available, the 'do you have a mobile?' question is perfectly valid and sensible. If you're accosted by a random stranger at a bus-stop and he says, 'do you have a mobile?', feel free to tell him about your dangly thing on a string. We have to be realistic - to the younger generation, 'mobile' is totally normal. For many of them, it is the only version they know of a phone. 'Mobile phone' seems a bit unnecessary most of the time - I'm imagining shouting through to my sister in the next room, 'your mobile phone is ringing'. H'mm, I don't like that.