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| Phone | Nokia N81 | HTC Dash / S620 / S621 (Excalibur) | Motorola Q9m / Q9c | BlackBerry 7750 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.4" diag. 4 : 3 |
? |
2.4" diag. 4 : 3 |
? |
| Display Resolution & Type |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
320 x 240 pixels LCD (TFT/TFD) |
320 x 240 pixels (~167 ppi) LCD (TFT/TFD) |
240 x 240 pixels LCD (Color) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 1,050 mAh | 960 mAh | 1,170 mAh | ? |
| Processor | 369 MHz ARM 11 | 200 MHz OMAP 850 | PXA27x (ARM920T) | ? |
| RAM | ? | ? | ? | ? |
| Storage | 8 GB * | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 2 megapixel | 1 megapixel | 1 megapixel | - |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | VGA (640 x 480) | ? | ? | - |
| Front Camera | - | - | - | - |
| Weight |
4.94 oz (140g) |
4.23 oz (120g) |
4.76 oz (135g) |
5.01 oz (142g) |
| Dimensions |
4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm) |
4.39" x 2.46" x 0.51" (112 x 62 x 13 mm) |
4.61" x 2.56" x 0.47" (117 x 65 x 11.9 mm) |
4.76" x 3.03" x 0.71" (121 x 77 x 18 mm) |
| Platform / OS | S60 (Symbian) | Windows Mobile Standard | Windows Mobile Standard | BlackBerry OS |
| Network Bands |
WCDMA: 1 GSM: 850, 900, 1800, 1900 |
GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
CDMA: 850, 1900 |
| Data Technology | EDGE | EDGE | EVDO r0 | 1xRTT |
| Features | ||||
| Accessibility | ||||
| Hearing Aid Compatible | - | - |
Yes M3 (mostly compatible) |
- |
| TTY/TDD (Digital) | - | Yes | Yes | Yes |
| Alerts | ||||
| Ringer Profiles | Yes | Yes | Yes | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | - |
| USB |
Yes Micro-USB |
Yes |
Yes Mini-USB |
Yes |
| Wi-Fi |
Yes 802.11 b,g |
Yes 802.11 b,g |
- | - |
| Input | ||||
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | Yes | Yes |
| Memory | ||||
| Memory Card Slot | Yes * | Yes | Yes | - |
| Music | ||||
| FM Radio | Yes | - | - | - |
| Headphone Jack (3.5mm) | Yes | - | - | - |
| Stereo Speakers | Yes | - | Yes | - |
| Voice | ||||
| Push-To-Talk | Yes * | - | - | - |
| Speaker Phone | Yes | Yes | Yes | - |
| * Some versions only | ||||
| Nokia N81 | HTC Dash / S620 / S621 (Excalibur) | Motorola Q9m / Q9c | BlackBerry 7750 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia N81 | HTC Dash / S620 / S621 (Excalibur) | Motorola Q9m / Q9c | BlackBerry 7750 |
