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| Phone | Sony Ericsson Xperia X10 mini (2010) | Coolpad Defiant | Nokia N73 | BlackBerry 7750 | Nokia Lumia 521 / 520 | 
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) | 
| Global Availability | Not yet released | Released | Released | Released | Released | 
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size | 2.6" diag. 4 : 3 | 5" diag. 16 : 9 | ? | ? | 4" diag. 5 : 3 | 
| Display Resolution & Type | 240 x 320 pixels (~157 ppi) LCD (TFT/TFD) | 480 x 854 pixels (~196 ppi) LCD (TFT/TFD) | 240 x 320 pixels LCD (TFT/TFD) | 240 x 240 pixels LCD (Color) | 480 x 800 pixels (~233 ppi) LCD (TFT/TFD) | 
| Display Refresh | 60 Hz | 60 Hz | ? | ? | ? | 
| Battery | ? | 2,450 mAh | 1,100 mAh | ? | 1,430 mAh | 
| Processor | 600 MHz Qualcomm S1 MSM7227 | 1.4 GHz Qualcomm Snapdragon 425 (MSM8917) | ? | ? | 1 GHz Qualcomm Snapdragon S4 MSM8270 | 
| RAM | ? | 1 GB | ? | ? | 512 MB | 
| Storage | ? raw hardware | 8 GB | ? raw hardware | ? raw hardware | 8 GB | 
| Main Camera | 5 megapixel | 5 megapixel | 3 megapixel | - | 5 megapixel | 
| Wide Camera | - | - | - | - | - | 
| Tele Camera | - | - | - | - | - | 
| Video Capture | VGA (640 x 480) | 720p HD | CIF (352 x 288) | - | 720p HD | 
| Front Camera | - | 2 megapixel | - | - | - | 
| Weight | 3.11 oz (88g) | 6.5 oz (184g) | 4.09 oz (116g) | 5.01 oz (142g) | 4.39 oz (124g) | 
| Dimensions | 3.26" x 1.97" x 0.64" (83 x 50 x 16.3 mm) | 5.69" x 2.81" x 0.4" (145 x 71 x 10.2 mm) | 4.33" x 1.93" x 0.75" (110 x 49 x 19.1 mm) | 4.76" x 3.03" x 0.71" (121 x 77 x 18 mm) | 4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) | 
| Platform / OS | Android | Android | S60 (Symbian) | BlackBerry OS | Windows | 
| Network Bands | 4G LTE: 2, 4, 5, 12 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 | WCDMA: 1 GSM: 850, 900, 1800, 1900 | CDMA: 850, 1900 | ||
| Data Technology | HSPA 7.2 | LTE (Cat 4) | EDGE | 1xRTT | HSPA+ 21 | 
| Features | |||||
| Flashlight | - | Yes | - | - | - | 
| Accessibility | |||||
| Hearing Aid Compatible | - | Yes | - | - | Yes | 
| TTY/TDD (Digital) | - | Yes | - | Yes | Yes | 
| Alerts | |||||
| Ringer Profiles | - | - | Yes | Yes | - | 
| Connectivity | |||||
| Bluetooth | Yes Classic Audio | Yes Classic Audio | Yes Classic Audio | - | Yes | 
| Infrared (IR) | - | - | Yes | - | - | 
| USB | Yes Micro-USB | Yes Micro-USB | Yes | Yes | Yes | 
| Wi-Fi | Yes 802.11 b,g | Yes 4 (802.11 b,g,n) | - | - | Yes | 
| Input | |||||
| Side Keys | Yes | Yes | Yes | Yes | Yes | 
| Text Keyboard, Hardware | - | - | - | Yes | - | 
| Touch Screen | Yes | Yes | - | - | Yes | 
| Memory | |||||
| Memory Card Slot | Yes | Yes | Yes | - | Yes | 
| Music | |||||
| FM Radio | Yes | - | Yes | - | - | 
| Headphone Jack (3.5mm) | Yes | Yes | - | - | Yes | 
| Stereo Speakers | - | - | Yes | - | - | 
| Voice | |||||
| Push-To-Talk | - | - | Yes * | - | - | 
| Speaker Phone | Yes | Yes | Yes | - | Yes | 
| * Some versions only | |||||
| Sony Ericsson Xperia X10 mini (2010) | Coolpad Defiant | Nokia N73 | BlackBerry 7750 | Nokia Lumia 521 / 520 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
|  |  |  |  |  | |
| Phone | Sony Ericsson Xperia X10 mini (2010) | Coolpad Defiant | Nokia N73 | BlackBerry 7750 | Nokia Lumia 521 / 520 | 
 







