Sound and Connectivity
In terms of sound, the absence of a loudspeaker and a 3.5mm jack suggests that the Bird S590 was designed principally for essential communication purposes. The phone supports vibration and downloadable polyphonic ringtones for alerts, reminiscent of the era’s ringtone customization options. Connectivity features are similarly basic, lacking Bluetooth, WLAN, positioning services, and radio capabilities, thus emphasizing its core function as a basic mobile phone.