| Sony Ericsson Xperia Arc S | Motorola RIZR Z8 |
| Manufacture | Sony Ericsson | Motorola |
| Model | Xperia Arc S | RIZR Z8 |
| Form factor | Block | Slider |
| Weight | 117 gram | 117.00 |
| Dimensions (HxWxD) | 125 x 63 x 8.7 | 110.00 x 51.00 x 16.00 |
| Operating System | Android | UIQ |
| Networks | 2G - 850/900/1800/1900 3G - 800/850/1900/2100 | 2G - 850/900/1800/1900 3G - 2100 |
| HSCSD |  | |
| GPRS |  | |
| EDGE | | |
| UMTS | | |
| HSDPA | | |
| HSPA+ | | |
| WiMAX | | |
| LTE (4G light) | | |
| WLAN / Wi-Fi | | |
| Wi-Fi Hotspot | | |
| Wi-Fi Direct | | |
| SMS | | |
| MMS | | |
| | |
| HDMI out | | |
| USB port | | |
| MHL | | |
| Bluetooth | | |
| Bluetooth version | NA | NA |
| DLNA | | |
| GPS | | |
| Glonass | | |
| ANT+ | | |
| IrDA | | |
| NFC | | |
| 3.5 mm audio connector | | |
| Camera | | |
| Camera resolution | 8.1 megapixel, autofocus, 2.4 smart zoom, BRAVIA engine, geo tagging, smile recognition | 2 Megapixels, 8x digital zoom |
| Image Stabilization | | |
| BSI sensor | | |
| Camera Flash/Light | | |
| Flash type | LED | NA |
| Video recording | | |
| Video capture resolution | 720p | NA |
| Second Camera | NA | NA |
| Display size | 4.2 inches | 2.20 |
| Touchscreen | | |
| Colour display | | |
| Number of colours | 16777216 | 16777216 |
| Display width | 480 | 240 |
| Display height | 854 | 320 |
| PPI | 233.25 | 181.82 |
| Second Display | NA | NA |
| CPU | 1.4 GHz Qualcomm Snapdragon MSM8255 | NA |
| GPU | Adreno 205 | NA |
| Memory | 512 MB. Expandable up to 32 GB with microSD card. 16 GB card included | 80 MB. Expandable up to 4GB with microSD card |
| Micro SIM | | |
| Dual SIM | | |
| MP3 | | |
| Ringtones / Music file format | MP3, AAC, AAC+, eAAC+ | Polyphonic 64 voices, MP3, AAC, eAAC+, A |
| Java | | |
| Games | Yes | NA |
| FM Radio | | |
| Battery | 1500 mAh | NA |
| Standby time (h) | 430 | 384 |
| Talktime (m) | 400 | 420 |
| Wireless Charging | | |
| Browser | Android HTML Webkit | 2.0 |
| Calendar | | |
| Voicedialing | | NA |
| IP Code | NA | NA |
| Predictive text | | NA |
| RSS reader | | |
| Voicememo | | NA |
| PC Synchronization | | |
| SyncML | | |
| Website | Website | Website |