Despite all the high-tech features (multimedia, connectivity, application-support, etc.) of the Sony-Ericsson W900i, only its Flashlight left a lasting impression. Always a useful built-in, the flashlight was actually the integrated camera's flash; pressing 5 while on camera mode would light your way at night.

The Nokia N70 and N72 lack this functionality, even if they both have flashes. Luckily, the enterprising David Siorpaes has created a hack that allows users to keep their flashes on, thus adding "flashlight" to their smartphones' feature sets.

Great Sounds: One thing I like about SE's recent Walkman phones is their earphones. They totally plug out outside noise, which means you'll hear more with less volume, which means you won't destroy your eardrums.