The SGH-E250 was a Samsung slider phone released in the mid-2000s, when polyphonic and melodic startup tones were a standard part of a handset's identity. Its power-on sound was built into the phone's firmware and played every time the device was switched on. As feature phones were replaced by smartphones, clips of these startup sounds began circulating on soundboards and in retro tech videos, preserved by collectors and creators who use them to instantly signal the era before touchscreens took over.