When I and my friends in Toronto signed up for mobile phone service about 15 years ago, we simply got to pick our last 4 digits. I saw examples like picking the same suffix as their landline, picking a mnemonic for their name (e.g. MARY -> 6279), picking lots of trailing zeros.
> I saw examples like picking the same suffix as their landline
I did that, to make it easier for people to remember, which is moot now. And now when I log into my bank or other account, they ask me if I want to get a text to XXX-XXX-8436 or XXX-XXX-8436? One is my cell and one is my landline and I'll be damned if I can tell which is which.
