Comparison of Nokia E51 camera-free and Nokia 7900 Prism [S]ave
| Attribute |  Nokia E51 camera-free × |  Nokia 7900 Prism × |
|---|---|---|
| General | ||
| Brand | Nokia | Nokia |
| Launch | ||
| Announced | 2008-02-01 | 2007-08-01 |
| Body | ||
| Width (mm) | 12 | 11.3 |
| Length (mm) | 114.8 | 112 |
| Height (mm) | 46 | 45 |
| Weight (g) | 100 | 101 |
| SIM | Mini-SIM | Mini-SIM |
| Network | ||
| Technology |
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| 2G bands |
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| 3G bands |
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| Speed |
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| Platform | ||
| OS | Symbian OS 9.2 | - |
| CPU | 369 MHz ARM 11 | - |
| Memory | ||
| Card slot | microSDHC (dedicated slot) | No |
| Internal |
|
|
| Display | ||
| Size (in) | 2 | 2 |
| Resolution (px) | 240 x 320 | 240 x 320 |
| Display Type | TFT | OLED |
| Battery | ||
| Type | Removable | Removable |
| Capcity (mAh) | Li-Ion | Li-Ion |
| Main Camera | ||
| Main Camera Type | - | Single |
| Main Camera Properties | - |
|
| Main Camera Video | - | QCIF |
| Main Camera Features | - | LED flash |
| Comms | ||
| WLAN | Wi-Fi 802.11b/g, VoIP over WLAN | No |
| Bluetooth | 2.0, A2DP | 2.0 |
| GPS | - | - |
| Radio | FM radio | No |
| USB | miniUSB 2.0 | microUSB |
| Sound | ||
| Loudspeaker | + | + |
| 3.5mm jack | - | - |
| Misc | ||
| Colors |
|
|
| SAR EU Head (W/kg) | 1.38 | 0.93 |
| SAR Head (W/kg) | 1.47 | 0.83 |
| SAR Body (W/kg) | 0.75 | 0.81 |
| Phonebook | - | Yes |
| Call records | - | 20 dialed, 20 received, 20 missed calls |
| Infrared port | Yes | - |
| Alert types | Vibration; Downloadable polyphonic, MP3 ringtones | Vibration; Downloadable polyphonic, MP3 ringtones |
| Features | ||
| Messaging | - | SMS, MMS, Email |
| Browser | WAP 2.0/xHTML, HTML | WAP 2.0/xHTML |
| Games | - | Yes + downloadable |
| Java | - | Yes, MIDP 2.0 |
| Stand-by (h) | 310 | 240 |
| Talk time (h) | Up to 4 h 20 min | Up to 3 h |
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