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| Phone | ZTE Prelude / Avail 2 | Samsung Galaxy J2 / J2 Pure / J2 Dash | Siemens SX1 | BlackBerry Key2 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
3.5" diag. 5 : 3 |
5" diag. 16 : 9 |
? |
4.5" diag. 5 : 3 |
| Display Resolution & Type |
320 x 480 pixels (~165 ppi) LCD (TFT/TFD) |
540 x 960 pixels (~220 ppi) LCD (TFT/TFD) |
176 x 220 pixels LCD (TFT/TFD) |
1080 x 1620 pixels (~433 ppi) LCD (TFT/TFD) |
| Display Refresh | 60 Hz | 60 Hz | ? | 60 Hz |
| Battery | 1,500 mAh | 2,600 mAh | 1,000 mAh | 3,500 mAh |
| Processor | 1 GHz Qualcomm Snapdragon MSM7225A | 1.4 GHz Samsung Exynos 7570 | ? | 2.2 GHz Qualcomm Snapdragon 660 |
| RAM | 512 MB | 2 GB | ? | 6 GB |
| Storage | 4 GB | 16 GB | ? raw hardware | 64 GB * |
| Main Camera | 2 megapixel | 8 megapixel | Yes | 12 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | 12 megapixel |
| Video Capture | VGA (640 x 480) | 1080p HD | QCIF (176 x 144) | 4K UHD |
| Front Camera | - | 5 megapixel | - | 8 megapixel |
| Weight |
4.4 oz (125g) |
5.43 oz (154g) |
4.09 oz (116g) |
5.93 oz (168g) |
| Dimensions |
4.6" x 2.44" x 0.45" (117 x 62 x 11.4 mm) |
5.65" x 2.84" x 0.35" (144 x 72 x 8.9 mm) |
4.29" x 2.2" x 0.75" (109 x 56 x 19.1 mm) |
5.96" x 2.82" x 0.33" (151 x 72 x 8.4 mm) |
| Platform / OS | Android | Android | S60 (Symbian) | Android |
| Network Bands |
WCDMA: 2, 5 GSM: 850, 1900 |
GSM: 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 20, 28, 29, 30, 38, 40, 41, 66 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
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| Data Technology | HSPA 7.2 | LTE (Cat 4) | GPRS | LTE (Cat 11) |
| Features | ||||
| Fingerprint Reader | - | - | - |
Yes stand-alone |
| Flashlight | - | Yes | - | Yes |
| Accessibility | ||||
| Hearing Aid Compatible | Yes | Yes | - | Yes |
| TTY/TDD (Digital) | Yes | Yes | - | Yes |
| Alerts | ||||
| Ringer Profiles | - | - | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Infrared (IR) | - | - | Yes | - |
| NFC | - | - | - | Yes |
| USB | Yes |
Yes Micro-USB |
Yes |
Yes USB Type C |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
Yes 4 (802.11 b,g,n) |
- |
Yes 5 (802.11 a,ac,b,g,n) |
| Input | ||||
| Side Keys | 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 |
| Photo & Video | ||||
| TV Output | - | - | - | Yes |
| Power | ||||
| Fast Charging | - | - | - | Yes |
| Voice | ||||
| HD Voice | - | - | - | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| ZTE Prelude / Avail 2 | Samsung Galaxy J2 / J2 Pure / J2 Dash | Siemens SX1 | BlackBerry Key2 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | ZTE Prelude / Avail 2 | Samsung Galaxy J2 / J2 Pure / J2 Dash | Siemens SX1 | BlackBerry Key2 |
