800 MHz Qualcomm MSM7225AARMv7
Xperia в„ў ST21i and ST21i2 supports UMTS HSPA 900 (Band VIII), 2100 (Band I), and GSM GPRS / EDGE 850, 900, 1800, 1900.
Xperia в„ў ST21a and ST21a2 supports UMTS HSPA 850 (Band V), 1900 (Band II), 2100 (Band I), and GSM GPRS / EDGE 850, 900, 1800, 1900.
3.2 вЂќdisplay, shatter proof sheet on acrylic glass.
2.9 GB * (up to 2.5 GB user accessible memory) internal phone storage.
512 MB RAM.
Memory card slot: microSD в„ў, up to 32GB
Dual SIM (Xperia в„ў tipo dual).
1500 maH battery.
103x 57 Г— 13 mm.
3.2 MP camera resolution.
4x digital zoom.
VGA video recording.
xLOUD sound experience.
Launching on Android 4.0 (Ice Cream Sandwich).
PlayNow в„ў service.
TrackID в„ў music recognition.
Facebook integration with contacts, gallery and the music player.
Sony Entertainment Network.
Tipo Dual differs from Tipo only in the presence of 2 SIM cards.