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| Phone | ZTE Z331 | Motorola EM330 / EM28 | Amazon Fire | Motorola Moto Z2 Force | Sonim XP5s |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
2.4" diag. 4 : 3 |
1.8" diag. 4 : 3 |
4.7" diag. 16 : 9 |
5.5" diag. 16 : 9 |
2.6" diag. 4 : 3 |
| Display Resolution & Type |
176 x 220 pixels (~117 ppi) LCD (TFT/TFD) |
128 x 160 pixels (~114 ppi) LCD (TFT/TFD) |
720 x 1280 pixels (~312 ppi) LCD (TFT/TFD) |
1440 x 2560 pixels (~534 ppi) AMOLED |
320 x 432 pixels (~204 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | 60 Hz | ? |
| Battery | 950 mAh | 940 mAh | 2,400 mAh | 2,730 mAh | 3,180 mAh |
| Processor | ? | ? | 2.2 GHz Qualcomm Snapdragon 800 | 2.4 GHz Qualcomm Snapdragon 835 (MSM8998) | 1.4 GHz Qualcomm Snapdragon 427 (MSM8920) |
| RAM | ? | ? | 2 GB | 4 GB | 2 GB |
| Storage | ? raw hardware | ? raw hardware | 32 GB * | 64 GB | 16 GB |
| Main Camera | 3 megapixel | 1 megapixel | 13 megapixel | 12 megapixel | 5 megapixel |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | QCIF (176 x 144) | ? | 1080p HD | 4K UHD | 720p HD |
| Front Camera | - | - | 2 megapixel | 5 megapixel | - |
| Weight |
4 oz (113g) |
3.17 oz (90g) |
5.64 oz (160g) |
5.04 oz (143g) |
9.17 oz (260g) |
| Dimensions |
3.84" x 2.02" x 0.69" (98 x 51 x 17.5 mm) |
3.71" x 1.95" x 0.68" (94 x 50 x 17.4 mm) |
5.5" x 2.6" x 0.35" (140 x 66 x 8.9 mm) |
6.13" x 2.99" x 0.24" (156 x 76 x 6.1 mm) |
5.55" x 2.52" x 0.91" (141 x 64 x 23 mm) |
| Form Factor | Clamshell | Clamshell | Slab | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) | Android | (proprietary) |
| Network Bands |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
GSM: 850, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 17 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 41, 66 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 25, 26, 28, 30, 38, 41, 66 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
| Data Technology | HSDPA 3.6 | EDGE | LTE (Cat 4) | LTE (Cat 16) | LTE (Cat 4) |
| Features | |||||
| Barometer | - | - | - | Yes | Yes |
| Fingerprint Reader | - | - | - |
Yes stand-alone |
- |
| Flashlight | - | - | Yes | Yes | Yes |
| GPS / Location | Yes | - | Yes | n/a | Yes |
| Ruggedized | - | - | - | - | Yes |
| VR-ready | - | - | - | Yes | - |
| Water-Resistant | - | - | - | Yes |
Yes IPX8 (SCUBA) |
| Accessibility | |||||
| Adjustable Text Size | - | - | - | n/a | Yes |
| Hearing Aid Compatible | Yes | Yes | Yes | Yes | Yes |
| Multiple Languages | Yes | Yes | Yes | n/a | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes | Yes |
| Alerts | |||||
| Extra Display | Yes | Yes | - | - | - |
| Ringer Profiles | Yes | - | - | - | Yes |
| Connectivity | |||||
| Bluetooth | Yes | Yes | Yes | Yes | Yes |
| Mobile Hotspot | - | - | Yes | n/a | Yes |
| NFC | - | - | Yes | Yes | - |
| USB |
Yes Micro-USB |
Yes Mini-USB |
Yes Micro-USB |
Yes USB Type C |
Yes USB Type C |
| Wi-Fi | - | - |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | |||||
| Picture ID | Yes | - | Yes | n/a | Yes |
| Ringer ID | Yes | - | Yes | n/a | Yes |
| Voice Dialing | - | - | Yes | n/a | - |
| Customization | |||||
| Custom Graphics | Yes | Yes | - | n/a | - |
| Custom Ringtones | Yes | Yes | Yes | n/a | Yes |
| Real-Music Ringers | Yes | Yes | - | n/a | - |
| Data & Network | |||||
| Data Tethering | Yes | - | Yes | n/a | - |
| Dual-SIM | - | - | - | Yes * | Yes |
| WAP / Web Browser | Yes | Yes | Yes | n/a | Yes |
| Input | |||||
| Predictive Text Entry | Yes | Yes | Yes | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Touch Screen | - | - | Yes | Yes | - |
| Memory | |||||
| Memory Card Slot | Yes | Yes | - | Yes | Yes |
| Messaging | |||||
| Email Client | Yes | - | Yes | n/a | - |
| EMS / Picture Messaging | - | Yes | - | n/a | - |
| Instant Messaging | Yes | - | - | n/a | - |
| MMS | Yes | Yes | Yes | n/a | Yes |
| Text Messaging Templates | Yes | Yes | Yes | n/a | Yes |
| Music | |||||
| FM Radio | - | Yes | - | - | Yes |
| Headphone Jack (3.5mm) | - | Yes | Yes | - | - |
| Music Player | Yes | Yes | Yes | n/a | Yes |
| Stereo Speakers | - | - | Yes | - | - |
| Photo & Video | |||||
| Miracast | - | - | Yes | - | - |
| TV Output | - | - | Yes | - | - |
| Power | |||||
| Fast Charging | - | - | - | Yes | - |
| Productivity | |||||
| Alarm | Yes | Yes | Yes | n/a | Yes |
| Calculator | Yes | Yes | Yes | n/a | Yes |
| Calendar | Yes | Yes | Yes | n/a | Yes |
| Voice Memo | Yes | - | Yes | n/a | Yes |
| Software | |||||
| Games | Yes | Yes | Yes | n/a | - |
| Java (J2ME) | Yes | Yes | - | n/a | - |
| Voice | |||||
| HD Voice | - | - | Yes | Yes | Yes |
| Push-To-Talk | - | - | - | - | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes | Yes |
| * Some versions only | |||||
| ZTE Z331 | Motorola EM330 / EM28 | Amazon Fire | Motorola Moto Z2 Force | Sonim XP5s | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | ZTE Z331 | Motorola EM330 / EM28 | Amazon Fire | Motorola Moto Z2 Force | Sonim XP5s |
