Samsung music phones The top-of-the-range SGH-i450 has as its top feature an amplifier developed by high-end audio specialists Bang & Olufsen. The smartphone runs the Symbian S60 software platform and is a dual-slider design: slide up and the smartphone features are activated, slide down and the music player functions appear on the 2.4-inch display. One weak point of the handset is the amount of built-in memory, which is just 35MB. That's only enough for seven to 10 songs, which is disappointing for a music phone. Memory can be expanded to 4GB with a Micro SD memory card.