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| Phone | ZTE Z331 | Samsung Galaxy S6 (GSM) | BLU Pure View | Nokia 3555 | Samsung SGH-X640 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
2.4" diag. 4 : 3 |
5.1" diag. 16 : 9 |
5.7" diag. 18 : 9 |
1.8" diag. 4 : 3 |
? |
| Display Resolution & Type |
176 x 220 pixels (~117 ppi) LCD (TFT/TFD) |
1440 x 2560 pixels (~576 ppi) AMOLED |
720 x 1440 pixels (~282 ppi) LCD (TFT/TFD) |
128 x 160 pixels (~114 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | 60 Hz | ? | ? |
| Battery | 950 mAh | 2,550 mAh | 3,000 mAh | ? | 800 mAh |
| Processor | ? | 2.1 GHz Samsung Exynos 7420 | 1.3 GHz MediaTek 6753 | ? | ? |
| RAM | ? | 3 GB | 3 GB | ? | ? |
| Storage | ? raw hardware | 32 GB * | 32 GB | ? raw hardware | ? raw hardware |
| Main Camera | 3 megapixel | 16 megapixel | 13 megapixel | Yes | Yes |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | QCIF (176 x 144) | 4K UHD | 1080p HD | QCIF (176 x 144) | - |
| Front Camera | - | 5 megapixel | 8 megapixel | - | - |
| Weight |
4 oz (113g) |
4.87 oz (138g) |
6.47 oz (183g) |
3.32 oz (94g) |
3 oz (85g) |
| Dimensions |
3.84" x 2.02" x 0.69" (98 x 51 x 17.5 mm) |
5.65" x 2.78" x 0.27" (143 x 71 x 6.8 mm) |
6" x 2.82" x 0.32" (152 x 72 x 8.1 mm) |
3.94" x 1.75" x 0.83" (100 x 44 x 21 mm) |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
| Form Factor | Clamshell | Slab | Slab | Clamshell | Clamshell |
| Platform / OS | (proprietary) | Android | Android | (proprietary) | (proprietary) |
| Network Bands |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 7, 12, 17, 28 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
||
| Data Technology | HSDPA 3.6 | LTE (Cat 6) | LTE (Cat 4) | WCDMA (UMTS) | GPRS |
| Features | |||||
| Fingerprint Reader | - | Yes |
Yes stand-alone |
- | - |
| Flashlight | - | Yes | Yes | - | - |
| GPS / Location | Yes | n/a | n/a | - | - |
| VR-ready | - | Yes | - | - | - |
| Accessibility | |||||
| Hearing Aid Compatible |
Yes M3, T4 (very tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
- |
Yes * M3, T3 (mostly tele-coil compatible) |
- |
| Multiple Languages | Yes | n/a | n/a | Yes | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes | - | - |
| Alerts | |||||
| Extra Display | Yes | - | - | Yes | - |
| Ringer Profiles | Yes | - | - | Yes | - |
| Connectivity | |||||
| Bluetooth | Yes | Yes | Yes | Yes | - |
| Infrared (IR) | - | Yes | - | - | - |
| MirrorLink | - | Yes | - | - | - |
| NFC | - | Yes | - | - | - |
| USB |
Yes Micro-USB |
Yes Micro-USB |
Yes Micro-USB |
Yes | - |
| Wi-Fi | - |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 4 (802.11 b,g,n) |
- | - |
| Contacts | |||||
| Picture ID | Yes | n/a | n/a | Yes | Yes |
| Ringer ID | Yes | n/a | n/a | Yes | Yes |
| Voice Dialing | - | n/a | n/a | Yes | - |
| Customization | |||||
| Custom Graphics | Yes | n/a | n/a | Yes | Yes |
| Custom Ringtones | Yes | n/a | n/a | Yes | Yes |
| Real-Music Ringers | Yes | n/a | n/a | Yes | - |
| Data & Network | |||||
| Data Tethering | Yes | n/a | n/a | - | - |
| Dual-SIM | - | - | Yes | - | - |
| WAP / Web Browser | Yes | n/a | n/a | Yes | Yes |
| Input | |||||
| Predictive Text Entry | Yes | n/a | n/a | Yes | Yes |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Touch Screen | - |
Yes Capacitive |
Yes Capacitive |
- | - |
| Memory | |||||
| Memory Card Slot | Yes | - | Yes | Yes | - |
| Messaging | |||||
| Email Client | Yes | n/a | n/a | - | - |
| EMS / Picture Messaging | - | n/a | n/a | - | Yes |
| Instant Messaging | Yes | n/a | n/a | Yes * | - |
| MMS | Yes | n/a | n/a | Yes | Yes |
| Text Messaging Templates | Yes | n/a | n/a | Yes | Yes |
| Music | |||||
| FM Radio | - | - | Yes | - | - |
| Headphone Jack (3.5mm) | - | Yes | Yes | - | - |
| Music Player | Yes | n/a | n/a | Yes | - |
| Photo & Video | |||||
| DLNA | - | Yes | - | - | - |
| Miracast | - | Yes | - | - | - |
| TV Output | - | Yes | - | - | - |
| Power | |||||
| Fast Charging | - | Yes | Yes | - | - |
| Wireless Charging | - | Yes | - | - | - |
| Productivity | |||||
| Alarm | Yes | n/a | n/a | Yes | Yes |
| Calculator | Yes | n/a | n/a | Yes | Yes |
| Calendar | Yes | n/a | n/a | Yes | Yes |
| To-Do List | - | n/a | n/a | Yes | Yes |
| Voice Memo | Yes | n/a | n/a | Yes | Yes |
| Software | |||||
| Games | Yes | n/a | n/a | Yes | Yes |
| Java (J2ME) | Yes | n/a | n/a | Yes | Yes |
| Voice | |||||
| HD Voice | - | Yes | - | - | - |
| Headset Jack (2.5 mm) | - | n/a | n/a | Yes | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes | Yes |
| * Some versions only | |||||
| ZTE Z331 | Samsung Galaxy S6 (GSM) | BLU Pure View | Nokia 3555 | Samsung SGH-X640 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | ZTE Z331 | Samsung Galaxy S6 (GSM) | BLU Pure View | Nokia 3555 | Samsung SGH-X640 |
