Though I found that I remember some phone numbers better than others especially when I'm staring intently at the dial-pad. Turns out I've memorised a visual pattern made by the sequence of numbers that I recall. For example, pressing 6542580 on my phone recalls the symbol for '4' with an elongated leg. Or even an arrow if put this way:
1 2 3 4 5 6 7 8 9 * 0 #
So now it's a question of remembering the right visual clue for each phone number. Hmm... Perhaps it's easier to remember the fact that it was English footballer Gary Linekar who played an exhibition cricket match for the MCC versus Germany, was out for one, and remarked "I always score 1 against the Germans".