| Nokia E66 |
 | General |
| Technology | GSM, UMTS, HSDPA |
| Size | 107.5 x 49.5 x 13.6 mm |
| Weight | 121 grams |
| Available colors | white steel, grey steel |
| Display |
| Display diagonal | 2.4” |
| Display resolution | 240 x 320 pixels |
| Display type | TFT |
| Number of colors | 16.7 million |
| Memory |
| Phonebook capacity | dynamic |
| SMS memory / max. MMS size | dynamic / 300KB |
| Internal memory | 110 MB |
| Memory expandability | microSD (max 8GB) |
| Data transfer |
| Frequency bands | 850/900/1800/1900 MHz |
| GPRS / EDGE | Class 10 (4+1/3+2) / Class 10 (236.8 kbps) |
| UMTS / HSDPA | present (384 kbps) / present (3.6 Mbps) |
| IrDA / Bluetooth | none / 2.0 (A2DP too) |
| WiFi | present |
| USB | microUSB 2.0 |
| Push-to-talk / RSS | present / present |
| GPS receiver | present |
| Basic functions |
| Profiles | present |
| Vibra function | present |
| Built-in handsfree | present |
| Voice dialing / voice commands | present / present |
| Sound recorder | present (max. 1 hour) |
| Alarm clock | present, also when turned off |
| Predictive text entry | T9 |
| Software |
| Platform | Symbian OS 9.3 Series 60 |
| WAP / HTML browser | present / present |
| E-mail client | present (POP3, IMAP4, Exchange, authenticated) |
| Java | present, MIDP 2.0 |
| Games | 2 + installable |
| Currency converter | present |
| Extra software | QuickOffice, Adobe PDF, Zip, name card reader |
| Multimedia |
| Main camera | 3.2 megapixels, autofocus, flash |
| Secondary camera | present, CIF resolution |
| Video recording | present, VGA, 30fps |
| Music player | present, can run in background |
| Equalizer | present |
| FM radio | present |
| Battery |
| Main battery | 1000 mAh Li-Ion |
| Standby time | 264 hours |
| Talk time | 570 minutes |
| Other |
| Nokia Maps 2.0 |
