| Sony Ericsson K660 | Motorola Milestone XT720 |
| Manufacture | Sony Ericsson | Motorola |
| Model | K660 | Milestone XT720 |
| Form factor | Block | Block |
| Weight | 95 gram | 160.00 |
| Dimensions (HxWxD) | 104 x 47 x 15 | 116.00 x 71.00 x 11.00 |
| Operating System | Other | Android |
| Networks | 2G - 850/900/1800/1900 3G - 2100 | 2G - 850/900/1800/1900 3G - 1700/2100 |
| 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 | 2 Megapixels 4x digital zoom | 8 megapixel, autofocus, digital zoom |
| Image Stabilization | | |
| BSI sensor | | |
| Camera Flash/Light | | |
| Flash type | NA | NA |
| Video recording | | |
| Video capture resolution | NA | NA |
| Second Camera | 0.3 megapixels (VGA) | NA |
| Display size | 2 inches | 3.70 |
| Touchscreen | | |
| Colour display | | |
| Number of colours | 262144 | 16000000 |
| Display width | 240 | 480 |
| Display height | 320 | 854 |
| PPI | 200 | 264.77 |
| Second Display | NA | NA |
| CPU | NA | 555 Mhz |
| GPU | NA | NA |
| Memory | 32 MB. 256MB M2 card included. Expandable with Memory Stick Micr | 512 MB RAM, 512 ROM, 8 GB storage. Expandable up to 32 GB with microSD card |
| Micro SIM | | |
| Dual SIM | | |
| MP3 | | |
| Ringtones / Music file format | Polyphonic, MP3, AAC | MP3, AMR-WB, AAC, AAC+, AMR-NB, WMA, eAAC+, MIDI |
| Java | | |
| Games | 3D and Java | Yes |
| FM Radio | | |
| Battery | NA | 1390 mAh |
| Standby time (h) | 330 | 320 |
| Talktime (m) | 540 | 540 |
| Wireless Charging | | |
| Browser | 2.0 XHTML | Android HTML Webkit |
| Calendar | | |
| Voicedialing | | |
| IP Code | NA | NA |
| Predictive text | | |
| RSS reader | | |
| Voicememo | | |
| PC Synchronization | | NA |
| SyncML | | |
| Website | Website | Website |