This one only applies if you have ordinary phones, you know the ones that don't have those advanced contacts feature. I've been doing it for a while now and I kinda like I can get the number to call pretty fast. It's fairly easy.
Ok normally what you do when saving a contact, you'll want to save the name and most of the time the reference point to differentiate some contacts who accidentally have the same name. People usually will save it in this format: eg. Siti Skali or Siti Putrajaya or Siti OSCC(these are different person, one working for Skali, one is my current housemate, one is working for OSCC).
Instead of that format, I use this:
Think about it. It's ok if I remember the name so I can just scroll to S right? What happens if I can't recall at all, the only thing I remember is the place where I met her? What's the name of the one I met briefly at that so and so meeting?? Now I can just scroll to O and I can see all my OSCC contacts in a row.
I've found that using this format has a few benefits. Say your phone dies on you and all you have left is an old 5 years ago phone that's still amazingly working. All contacts on your SIM card now such a pain to search without that advance search you're quite used to now, doesn't it. Also, using this way you reduce the headache of memorizing contact names. If you're like me with some memory problem, I can't be bothered to memorize everyone's name lah (of people I only met briefly but felt I should have their numbers). My brain has so much other things to do than what my phone can do for me. And you get to see your contacts grouped (in a way) so oh it's so easy to select multiple recipients. I get to know faster too if I haven't had someone's number yet from my workplace (for example).
See this method has been giving my brain a break for quite a number of times already. I'm spreading the goodness to you people! All I ask in return is free food and free petrol :P