Audio and Multimedia
One of the standout features of this phone is its 2.1 stereo surround sound, which includes two tweeters and a bass loudspeaker. This was a unique offering for mobile devices at that time, catering to users who valued high-quality audio playback. Although it lacks a 3.5mm headphone jack, the OT-S853 could play MP3, AAC, and AAC+ ringtones, providing a degree of audio versatility.