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| Phone | Nokia Lumia 521 / 520 | BlackBerry KEYone | Samsung Galaxy S6 (GSM) | BlackBerry 7750 | Samsung Transform Ultra |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
4" diag. 5 : 3 |
4.5" diag. 5 : 3 |
5.1" diag. 16 : 9 |
? |
3.5" diag. 5 : 3 |
| Display Resolution & Type |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
1080 x 1620 pixels (~433 ppi) LCD (TFT/TFD) |
1440 x 2560 pixels (~576 ppi) AMOLED |
240 x 240 pixels LCD (Color) |
320 x 480 pixels (~165 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | 60 Hz | ? | 60 Hz |
| Battery | 1,430 mAh | 3,505 mAh | 2,550 mAh | ? | 1,500 mAh |
| Processor | 1 GHz Qualcomm Snapdragon S4 MSM8270 | 2 GHz Qualcomm Snapdragon 625 (MSM8953) | 2.1 GHz Samsung Exynos 7420 | ? | 1 GHz Qualcomm Snapdragon S2 MSM8655 |
| RAM | 512 MB | 3 GB | 3 GB | ? | ? |
| Storage | 8 GB | 32 GB | 32 GB * | ? raw hardware | ? raw hardware |
| Main Camera | 5 megapixel | 12 megapixel | 16 megapixel | - | 3 megapixel |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | 720p HD | 4K UHD | 4K UHD | - | VGA (640 x 480) |
| Front Camera | - | 8 megapixel | 5 megapixel | - | Yes |
| Weight |
4.39 oz (124g) |
6.35 oz (180g) |
4.87 oz (138g) |
5.01 oz (142g) |
4.9 oz (139g) |
| Dimensions |
4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) |
5.87" x 2.85" x 0.37" (149 x 72 x 9.4 mm) |
5.65" x 2.78" x 0.27" (143 x 71 x 6.8 mm) |
4.76" x 3.03" x 0.71" (121 x 77 x 18 mm) |
4.5" x 2.4" x 0.55" (114 x 61 x 14 mm) |
| Platform / OS | Windows | Android | Android | BlackBerry OS | Android |
| Network Bands |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 20, 25, 26, 28, 29, 30, 41 WCDMA: 1, 2, 4, 5 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
CDMA: 800, 850, 1900 |
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| Data Technology | HSPA+ 21 | LTE (Cat 6) | LTE (Cat 6) | 1xRTT | EVDO rA |
| Features | |||||
| Fingerprint Reader | - |
Yes stand-alone |
Yes | - | - |
| Flashlight | - | Yes | Yes | - | - |
| VR-ready | - | - | Yes | - | - |
| Accessibility | |||||
| Hearing Aid Compatible | Yes | Yes | Yes | - | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes | Yes |
| Alerts | |||||
| Ringer Profiles | - | - | - | Yes | - |
| Connectivity | |||||
| Bluetooth | Yes | Yes | Yes | - | Yes |
| Infrared (IR) | - | - | Yes | - | - |
| MirrorLink | - | - | Yes | - | - |
| NFC | - | Yes | Yes | - | - |
| USB | Yes |
Yes USB Type C |
Yes Micro-USB |
Yes | Yes |
| Wi-Fi | Yes |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
- |
Yes 4 (802.11 a,b,g,n) |
| Input | |||||
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | - | Yes | Yes |
| Touch Screen | Yes | Yes | Yes | - | Yes |
| Memory | |||||
| Memory Card Slot | Yes | Yes | - | - | Yes |
| Music | |||||
| FM Radio | - | Yes | - | - | - |
| Headphone Jack (3.5mm) | Yes | Yes | Yes | - | Yes |
| Photo & Video | |||||
| DLNA | - | - | Yes | - | - |
| Miracast | - | Yes | Yes | - | - |
| TV Output | - | - | Yes | - | - |
| Power | |||||
| Fast Charging | - | Yes | Yes | - | - |
| Wireless Charging | - | - | Yes | - | - |
| Voice | |||||
| HD Voice | - | Yes | Yes | - | - |
| Speaker Phone | Yes | Yes | Yes | - | Yes |
| Nokia Lumia 521 / 520 | BlackBerry KEYone | Samsung Galaxy S6 (GSM) | BlackBerry 7750 | Samsung Transform Ultra | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia Lumia 521 / 520 | BlackBerry KEYone | Samsung Galaxy S6 (GSM) | BlackBerry 7750 | Samsung Transform Ultra |
