| Manufacture | Toshiba | Sony |
| Model | TS21i | Xperia E1 Dual |
| Form factor | Block | Block |
| Weight | 98 gram | 120.00 |
| Dimensions (HxWxD) | 120 x 51 x 21 | 118.00 x 62.40 x 12.00 |
| Operating System | Other | Android |
| Networks | 2G - 900/1800
| 2G - 850/900/1800/1900
3G - 850/900/1900/2100 |
| HSCSD |  | |
| GPRS |  | |
| EDGE | | |
| UMTS | | |
| HSDPA | | |
| HSPA+ | | |
| WiMAX | | |
| LTE (4G light) | | |
| WLAN / Wi-Fi | | |
| Wi-Fi Hotspot | | |
| Wi-Fi Direct | | |
| SMS | | |
| MMS | | |
| Email | | |
| HDMI out | | |
| USB port | | |
| MHL | | |
| Bluetooth | | |
| Bluetooth version | NA | 4.0 |
| DLNA | | |
| GPS | | |
| Glonass | | |
| ANT+ | | |
| IrDA | | |
| NFC | | |
| 3.5 mm audio connector | | |
| Camera | | |
| Camera resolution | NA | 3 megapixel, autofocus, face detection |
| Image Stabilization | | |
| BSI sensor | | |
| Camera Flash/Light | | |
| Flash type | NA | NA |
| Video recording | | |
| Video capture resolution | NA | 720p |
| Second Camera | NA | NA |
| Display size | 0 inches | 4.00 |
| Touchscreen | | |
| Colour display | | |
| Number of colours | NA | 16777216 |
| Display width | NA | 480 |
| Display height | NA | 800 |
| PPI | NA | 233.24 |
| Second Display | NA | NA |
| CPU | NA | 1.2 GHz dual-core Qualcomm MSM8210 |
| GPU | NA | NA |
| Memory | NA | 512 MB RAM. 4 GB internal storage. Expandable with additional 32 GB using microSD card |
| Micro SIM | | |
| Dual SIM | | |
| MP3 | | |
| Ringtones / Music file format | 20 | MP3, AAC, AAC+, eAAC+, WMA |
| Java | | |
| Games | NA | NA |
| FM Radio | | |
| Battery | Li-ion | NA |
| Standby time (h) | 180 | 551 |
| Talktime (m) | 180 | 552 |
| Wireless Charging | | |
| Browser | I-mode | Android HTML Webkit |
| Calendar | | |
| Voicedialing | | |
| IP Code | NA | NA |
| Predictive text | | |
| RSS reader | | |
| Voicememo | | |
| PC Synchronization | | |
| SyncML | | |
| Website | Website | Website |
