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| Phone | Nokia N81 | HTC ThunderBolt | Siemens SX66 / MDA III / PDA2K (HTC Blue Angel) |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
2.4" diag. 4 : 3 |
4.3" diag. 5 : 3 |
? |
| Display Resolution & Type |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~217 ppi) LCD (TFT/TFD) |
240 x 320 pixels LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? |
| Battery | 1,050 mAh | 1,400 mAh | 1,490 mAh |
| Processor | 369 MHz ARM 11 | 1 GHz Qualcomm Snapdragon S2 MSM8655 | 400 MHz Intel XScale |
| RAM | ? | 768 MB | ? |
| Storage | 8 GB * | 8 GB | ? raw hardware |
| Main Camera | 2 megapixel | 8 megapixel | Yes |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | VGA (640 x 480) | 720p HD | QCIF (176 x 144) |
| Front Camera | - | 1 megapixel | - |
| Weight |
4.94 oz (140g) |
5.78 oz (164g) |
7.41 oz (210g) |
| Dimensions |
4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm) |
4.8" x 2.6" x 0.52" (122 x 66 x 13.2 mm) |
4.92" x 2.83" x 0.75" (125 x 72 x 19.1 mm) |
| Platform / OS | S60 (Symbian) | Android | Windows Mobile Professional |
| Network Bands |
WCDMA: 1 GSM: 850, 900, 1800, 1900 |
4G LTE: 13 CDMA: 850, 1900 |
GSM: 850, 900, 1800, 1900 |
| Data Technology | EDGE | LTE (Cat 3) | GPRS |
| Features | |||
| Flashlight | - | Yes | - |
| Accessibility | |||
| Hearing Aid Compatible | - | Yes | - |
| TTY/TDD (Digital) | - | Yes | - |
| Alerts | |||
| Ringer Profiles | Yes | - | - |
| Connectivity | |||
| Bluetooth |
Yes Classic Audio |
Yes Classic Audio |
Yes |
| Infrared (IR) | - | - | Yes |
| USB |
Yes Micro-USB |
Yes Micro-USB |
Yes |
| Wi-Fi |
Yes 802.11 b,g |
Yes 4 (802.11 b,g,n) |
Yes |
| Input | |||
| Side Keys | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | Yes |
| Touch Screen | - | Yes | Yes |
| Memory | |||
| Memory Card Slot | Yes * | Yes | Yes |
| Music | |||
| FM Radio | Yes | Yes | - |
| Headphone Jack (3.5mm) | Yes | Yes | - |
| Stereo Speakers | Yes | - | - |
| Photo & Video | |||
| DLNA | - | Yes | - |
| Voice | |||
| Push-To-Talk | Yes * | - | - |
| Speaker Phone | Yes | Yes | Yes |
| * Some versions only | |||
| Nokia N81 | HTC ThunderBolt | Siemens SX66 / MDA III / PDA2K (HTC Blue Angel) | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia N81 | HTC ThunderBolt | Siemens SX66 / MDA III / PDA2K (HTC Blue Angel) |
