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| Phone | Samsung Knack U310 | Sony Xperia XZ2 | ZTE C88 | Amazon Fire |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Not yet released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.2" diag. 4 : 3 |
5.7" diag. 18 : 9 |
2" diag. 4 : 3 |
4.7" diag. 16 : 9 |
| Display Resolution & Type |
176 x 220 pixels (~128 ppi) LCD (TFT/TFD) |
1080 x 2160 pixels (~424 ppi) LCD (TFT/TFD) |
176 x 220 pixels (~141 ppi) LCD (TFT/TFD) |
720 x 1280 pixels (~312 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? | ? |
| Battery | 1,000 mAh | 3,180 mAh | 800 mAh | 2,400 mAh |
| Processor | ? | Qualcomm Snapdragon 845 | ? | 2.2 GHz Qualcomm Snapdragon 800 |
| RAM | ? | 4 GB | ? | 2 GB |
| Storage | ? raw hardware | 64 GB | ? raw hardware | 32 GB * |
| Main Camera | - | 19 megapixel | Yes | 13 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | 4K UHD | - | 1080p HD |
| Front Camera | - | 5 megapixel | - | 2 megapixel |
| Weight |
3.63 oz (103g) |
6.98 oz (198g) |
3.46 oz (98g) |
5.64 oz (160g) |
| Dimensions |
3.78" x 2.01" x 0.74" (96 x 51 x 18.8 mm) |
6.02" x 2.83" x 0.44" (153 x 72 x 11.1 mm) |
3.85" x 1.92" x 0.7" (98 x 49 x 17.8 mm) |
5.5" x 2.6" x 0.35" (140 x 66 x 8.9 mm) |
| Form Factor | Clamshell | Slab | Clamshell | Slab |
| Platform / OS | (proprietary) | Android | (proprietary) | (proprietary) |
| Network Bands |
CDMA: 850, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 29, 38, 40, 41, 66 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 17 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
| Data Technology | - | LTE (Cat 18) | 1xRTT | LTE (Cat 4) |
| Features | ||||
| Fingerprint Reader | - |
Yes stand-alone |
- | - |
| Flashlight | - | Yes | - | Yes |
| GPS / Location | Yes | n/a | Yes | Yes |
| Water-Resistant | - |
Yes IPX5 (direct spray) |
- | - |
| Accessibility | ||||
| Adjustable Text Size | Yes | n/a | - | - |
| Hearing Aid Compatible | Yes | Yes | - | Yes |
| Multiple Languages | Yes | n/a | Yes | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | Yes |
| Alerts | ||||
| Extra Display | Yes | - | Yes | - |
| Connectivity | ||||
| Bluetooth |
- |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
| Mobile Hotspot | - | n/a | - | Yes |
| NFC | - | Yes | - | Yes |
| USB | - |
Yes USB Type C |
Yes Micro-USB |
Yes Micro-USB |
| Wi-Fi | - |
Yes 5 (802.11 a,ac,b,g,n) |
- |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | ||||
| Picture ID | - | n/a | - | Yes |
| Ringer ID | - | n/a | Yes | Yes |
| Voice Dialing | Yes | n/a | Yes | Yes |
| Customization | ||||
| Custom Graphics | - | n/a | Yes | - |
| Custom Ringtones | - | n/a | Yes | Yes |
| Real-Music Ringers | - | n/a | Yes | - |
| Data & Network | ||||
| Data Tethering | - | n/a | - | Yes |
| Dual-SIM | - | Yes | - | - |
| WAP / Web Browser | - | n/a | Yes | Yes |
| Input | ||||
| Predictive Text Entry | Yes | n/a | Yes | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | - | Yes | - | Yes |
| Memory | ||||
| Memory Card Slot | - | Yes | - | - |
| Messaging | ||||
| Email Client | - | n/a | Yes | Yes |
| EMS / Picture Messaging | Yes | n/a | - | - |
| Instant Messaging | - | n/a | Yes | - |
| MMS | - | n/a | Yes | Yes |
| Text Messaging Templates | - | n/a | Yes | Yes |
| Music | ||||
| Headphone Jack (3.5mm) | - | - | - | Yes |
| Music Player | - | n/a | - | Yes |
| Stereo Speakers | - | Yes | - | Yes |
| Photo & Video | ||||
| DLNA | - | Yes | - | - |
| Miracast | - | Yes | - | Yes |
| TV Output | - | - | - | Yes |
| Power | ||||
| Fast Charging | - | Yes | - | - |
| Wireless Charging | - | Yes | - | - |
| Productivity | ||||
| Alarm | Yes | n/a | Yes | Yes |
| Calculator | Yes | n/a | Yes | Yes |
| Calendar | Yes | n/a | Yes | Yes |
| Voice Memo | - | n/a | Yes | Yes |
| Software | ||||
| BREW | - | n/a | Yes | - |
| Games | - | n/a | Yes | Yes |
| Voice | ||||
| HD Voice | - | Yes | - | Yes |
| Headset Jack (2.5 mm) | Yes | n/a | - | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Samsung Knack U310 | Sony Xperia XZ2 | ZTE C88 | Amazon Fire | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung Knack U310 | Sony Xperia XZ2 | ZTE C88 | Amazon Fire |
