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| Phone | Nokia Lumia 521 / 520 | ZTE Speed | Palm Treo Pro (CDMA) | Huawei W1 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
4" diag. 5 : 3 |
4.5" diag. 16 : 9 |
? |
4" diag. 5 : 3 |
| Display Resolution & Type |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
540 x 960 pixels (~245 ppi) LCD (TFT/TFD) |
320 x 320 pixels LCD (TFT/TFD) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? | ? |
| Battery | 1,430 mAh | 2,000 mAh | 1,500 mAh | 1,950 mAh |
| Processor | 1 GHz Qualcomm Snapdragon S4 MSM8270 | 1.2 GHz Qualcomm Snapdragon 410 MSM8916 | 528 MHz Qualcomm MSM7501a | 1.2 GHz Qualcomm Snapdragon 400 MSM8230 |
| RAM | 512 MB | 1 GB | ? | 512 MB |
| Storage | 8 GB | 8 GB | ? raw hardware | 4 GB |
| Main Camera | 5 megapixel | 5 megapixel | 2 megapixel | 5 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | 720p HD | 720p HD | ? | 720p HD |
| Front Camera | - | 2 megapixel | - | Yes |
| Weight |
4.39 oz (124g) |
4.8 oz (136g) |
4.69 oz (133g) |
4.41 oz (125g) |
| Dimensions |
4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) |
5.3" x 2.6" x 0.4" (135 x 66 x 10.2 mm) |
4.49" x 2.36" x 0.53" (114 x 60 x 13.5 mm) |
4.84" x 2.5" x 0.41" (123 x 64 x 10.4 mm) |
| Platform / OS | Windows | Android | Windows Mobile Professional | Windows |
| Network Bands |
4G LTE: 25, 26, 41 CDMA: 800, 850, 1900 |
CDMA: 850, 1900 |
WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
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| Data Technology | HSPA+ 21 | LTE (Cat 3) | EVDO rA | HSPA+ 21 |
| Features | ||||
| Accessibility | ||||
| Hearing Aid Compatible | Yes | Yes | Yes | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Infrared (IR) | - | - | Yes | - |
| USB | Yes |
Yes Micro-USB |
Yes Micro-USB |
Yes Micro-USB |
| Wi-Fi | Yes |
Yes 4 (802.11 b,g,n) |
Yes 802.11 b,g |
Yes 4 (802.11 b,g,n) |
| Input | ||||
| Side Keys | Yes | Yes | Yes | Yes |
| Stylus | - | - | Yes | - |
| Text Keyboard, Hardware | - | - | Yes | - |
| Touch Screen | Yes | Yes | Yes | Yes |
| Memory | ||||
| Memory Card Slot | Yes | Yes | Yes | Yes |
| Music | ||||
| Headphone Jack (3.5mm) | Yes | Yes | Yes | Yes |
| Voice | ||||
| HD Voice | - | Yes | - | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Nokia Lumia 521 / 520 | ZTE Speed | Palm Treo Pro (CDMA) | Huawei W1 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia Lumia 521 / 520 | ZTE Speed | Palm Treo Pro (CDMA) | Huawei W1 |
