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| Phone | Amazon Fire | Samsung Transform Ultra | Nokia Lumia 521 / 520 | Motorola Droid Ultra |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
4.7" diag. 16 : 9 |
3.5" diag. 5 : 3 |
4" diag. 5 : 3 |
5" diag. 16 : 9 |
| Display Resolution & Type |
720 x 1280 pixels (~312 ppi) LCD (TFT/TFD) |
320 x 480 pixels (~165 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
720 x 1280 pixels (~294 ppi) AMOLED |
| Display Refresh | ? | 60 Hz | ? | 60 Hz |
| Battery | 2,400 mAh | 1,500 mAh | 1,430 mAh | 2,130 mAh |
| Processor | 2.2 GHz Qualcomm Snapdragon 800 | 1 GHz Qualcomm Snapdragon S2 MSM8655 | 1 GHz Qualcomm Snapdragon S4 MSM8270 | 1.7 GHz Qualcomm Snapdragon S4 Pro MSM8960T |
| RAM | 2 GB | ? | 512 MB | 2 GB |
| Storage | 32 GB * | ? raw hardware | 8 GB | 16 GB |
| Main Camera | 13 megapixel | 3 megapixel | 5 megapixel | 10 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | 1080p HD | VGA (640 x 480) | 720p HD | 1080p HD |
| Front Camera | 2 megapixel | Yes | - | 2 megapixel |
| Weight |
5.64 oz (160g) |
4.9 oz (139g) |
4.39 oz (124g) |
4.83 oz (137g) |
| Dimensions |
5.5" x 2.6" x 0.35" (140 x 66 x 8.9 mm) |
4.5" x 2.4" x 0.55" (114 x 61 x 14 mm) |
4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) |
5.41" x 2.8" x 0.28" (137 x 71 x 7.2 mm) |
| Form Factor | Slab | Slide | Slab | Slab |
| Platform / OS | (proprietary) | Android | Windows | Android |
| Network Bands |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 17 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
CDMA: 800, 850, 1900 |
4G LTE: 4, 13 WCDMA: 1, 2, 5, 8 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900 |
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| Data Technology | LTE (Cat 4) | EVDO rA | HSPA+ 21 | LTE (Cat 3) |
| Features | ||||
| Flashlight | Yes | - | - | - |
| GPS / Location | Yes | n/a | n/a | n/a |
| Accessibility | ||||
| Adjustable Text Size | - | n/a | n/a | n/a |
| Hearing Aid Compatible | Yes | Yes | Yes | Yes |
| Multiple Languages | Yes | n/a | n/a | n/a |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes |
| Connectivity | ||||
| Bluetooth |
Yes Classic Audio |
Yes Classic Audio |
Yes |
Yes Classic Audio |
| Mobile Hotspot | Yes | n/a | n/a | n/a |
| NFC | Yes | - | - | Yes |
| USB |
Yes Micro-USB |
Yes | Yes |
Yes Micro-USB |
| Wi-Fi |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 4 (802.11 a,b,g,n) |
Yes |
Yes 4 (802.11 a,b,g,n) |
| Contacts | ||||
| Picture ID | Yes | n/a | n/a | n/a |
| Ringer ID | Yes | n/a | n/a | n/a |
| Voice Dialing | Yes | n/a | n/a | n/a |
| Customization | ||||
| Custom Graphics | - | n/a | n/a | n/a |
| Custom Ringtones | Yes | n/a | n/a | n/a |
| Real-Music Ringers | - | n/a | n/a | n/a |
| Data & Network | ||||
| Data Tethering | Yes | n/a | n/a | n/a |
| WAP / Web Browser | Yes | n/a | n/a | n/a |
| Input | ||||
| Predictive Text Entry | Yes | n/a | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | - | - |
| Touch Screen | Yes | Yes | Yes | Yes |
| Memory | ||||
| Memory Card Slot | - | Yes | Yes | - |
| Messaging | ||||
| Email Client | Yes | n/a | n/a | n/a |
| Instant Messaging | - | n/a | n/a | n/a |
| MMS | Yes | n/a | n/a | n/a |
| Text Messaging Templates | Yes | n/a | n/a | n/a |
| Music | ||||
| Headphone Jack (3.5mm) | Yes | Yes | Yes | Yes |
| Music Player | Yes | n/a | n/a | n/a |
| Stereo Speakers | Yes | - | - | - |
| Photo & Video | ||||
| Miracast | Yes | - | - | Yes |
| TV Output | Yes | - | - | - |
| Productivity | ||||
| Alarm | Yes | n/a | n/a | n/a |
| Calculator | Yes | n/a | n/a | n/a |
| Calendar | Yes | n/a | n/a | n/a |
| To-Do List | - | n/a | n/a | n/a |
| Voice Memo | Yes | n/a | n/a | n/a |
| Software | ||||
| Games | Yes | n/a | n/a | n/a |
| Voice | ||||
| HD Voice | Yes | - | - | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Amazon Fire | Samsung Transform Ultra | Nokia Lumia 521 / 520 | Motorola Droid Ultra | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Amazon Fire | Samsung Transform Ultra | Nokia Lumia 521 / 520 | Motorola Droid Ultra |
