| Manufacturer | |
| Sony | Samsung |
| Announced | |
| June 2012 | March 2010 |
| Status | |
| Available - August 2012 | Available - March 2010 |
| Colors | |
| Classic Black, Classic White, Deep Red, Navy Blue | Jamaican Yellow, Cupid Pink, Minimal White, and Festival Orange; |
| Form Factor | |
| Candybar | Candybar |
| Dimension | |
|
103 x 57 x 13 mm (4.06 x 2.24 x 0.51 in) |
103 x 56.5 x 12 mm (4.06 x 2.22 x 0.47 in) |
| Weight | |
| 99.4 g (3.49.0.14 oz) | 93.2 g (3.28.0.07 oz) |
| 2G Network | |
| GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | |
| HSDPA 900 / 2100 - ST21i HSDPA 850 / 1900 / 2100 - ST21a |
N/A |
| Messaging | |
| SMS, MMS, Push Mail, EMail, IM | SMS, MMS |
| OS | |
| Android OS, v4.0.3 (Ice Cream Sandwich) | - |
| Processor | |
| 800 MHz, Qualcomm MSM7227A [Similar] | - |
| GPU | |
| Adreno 200 [Similar] | - |
| RAM | |
| 512 MB [Browse Similar] | N/A |
| Internal Memory | |
| 2.9 GB storage (2.5 GB user available) | 50 MB |
| External Memory | |
| microSD, up to 32 GB | microSD, up to 8 GB |
| 3.5mm Jack | |
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| Radio | |
| Stereo FM radio with RDS | Stereo FM radio with RDS |
| Games | |
| Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| GPRS | |
| Up to 86 kbps | Class 10 (4+1/3+2 slots), 32 - 48 kbps |
| Edge | |
| Up to 237 kbps | Class 10, 236.8 kbps |
| 3G | |
| HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps | N/A |
| Bluetooth | |
| Yes, v2.1 with A2DP | Yes, v2.1 with A2DP |
| Wi-Fi | |
| Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Yes, Wi-Fi 802.11b/g |
| USB | |
| Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | |
| Yes, with A-GPS support | No |
| Browser | |
| HTML | WAP 2.0/xHTML, HTML |
| Phonebook | |
| Practically unlimited entries and fields, Photocall | 2000 contacts, Photocall |
| Call Records | |
| Practically unlimited | 20 dialed, 20 received, 20 missed calls |
| Internal | |
| 2.9 GB storage (2.5 GB user available), 512 MB RAM | 50 MB |
| Expandable Storage | |
| microSD, up to 32 GB | microSD, up to 8 GB |
| Fingerprint | |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| NFC | |
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| Type | |
| Standard battery, Li-Ion | Li-Ion Battery |
| Capacity | |
| 1500 mAh | 960 mAh |
| Stand by | |
| Up to 470 h (2G) Up to 545 h (3G) |
Up to 730 h |
| Talk Time | |
| Up to 5 h (2G) Up to 4 h 30 min (3G) |
Up to 9 h |