| Local Name | E66 |
| Technology | GSM / HSPA |
| 3G Bands | HSDPA 900 / 2100 | HSDPA 850 / 1900 - American version |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 |
| Speed | HSPA 3.6/0.384 Mbps |
| GPRS | Class 32, 100 kbps |
| EDGE | Class 32, 296 kbps |
| Announced | 2008, June. Released 2008, July |
| Status | Discontinued |
| Dimensions | 107.5 x 49.5 x 13.6 mm, 62.6 cc (4.23 x 1.95 x 0.54 in) |
| Weight | 121 g (4.27 oz) |
| SIM | Mini-SIM |
| Display Type | TFT, 16M colors |
| Screen Size | 2.4 inches (~33.5% screen-to-body ratio) |
| Resolution | 240 x 320 pixels (~167 ppi pixel density) |
| OS | Symbian OS 9.2, Series 60 v3.1 UI |
| CPU | 369 MHz ARM 11 |
| Card Slot | microSD, up to 8 GB |
| Internal Memory | 110 MB, 128 MB RAM |
| Primary Camera | 3.15 MP, 2048 x 1536 pixels, autofocus, LED flash |
| Video | 320p@15fps |
| Secondary Camera | Videocall camera |
| Alert Types | Vibration; Downloadable polyphonic, monophonic, MP3 ringtones |
| Loudspeaker | Yes |
| 3.5mm Jack | No |
| Sound | 2.5 mm audio jack |
| WLAN | Wi-Fi 802.11 b/g |
| Bluetooth | v2.0, A2DP |
| GPS | Yes, with A-GPS; Nokia Maps |
| Infrared Port | Yes |
| Radio | FM radio; Visual radio |
| USB | microUSB v2.0 |
| Sensors | Accelerometer |
| Messaging | SMS, MMS, Email, Instant Messaging |
| Browser | WAP 2.0/xHTML, HTML |
| Java | Yes, MIDP 2.0 |
| Features Summary | MP3/AAC/MP4 player, Document viewer (Word, Excel, PowerPoint, PDF) incl. MS Office 2007 support via free update, Push to talk, Voice command/dial, Turn-to-mute, Organizer, VoIP, Printing |
| Battery | Li-Ion 1000 mAh battery (BL-4U) |
| Stand By | Up to 264 h (2G) / 336 h (3G) |
| Talk Time | Up to 7 h 30 m (2G) / 7 h 30 min (3G) |
| Colors | White Steel, Grey Steel, Black, Red |
| SAR US | 1.01 W/kg (head) 0.36 W/kg (body) |
| SAR EU | 1.20 W/kg (head) |
