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| Phone | ZTE Z331 | Sharp GX-10 / GX-10i | Microsoft Surface Duo 2 | Kyocera Hydro XTRM (GSM) |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Not yet released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.4" diag. 4 : 3 |
? |
8.3" diag. 4 : 3 |
4" diag. 5 : 3 |
| Display Resolution & Type |
176 x 220 pixels (~117 ppi) LCD (TFT/TFD) |
120 x 160 pixels LCD (TFT/TFD) |
2688 x 1892 pixels (~396 ppi) AMOLED |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | 90 Hz | 60 Hz |
| Battery | 950 mAh | 720 mAh | 4,449 mAh | 2,000 mAh |
| Processor | ? | ? | Qualcomm Snapdragon 888 | 1.2 GHz Qualcomm Snapdragon S4 Plus MSM8960 |
| RAM | ? | ? | 8 GB | 1 GB |
| Storage | ? raw hardware | ? raw hardware | 128 GB * | 4 GB |
| Main Camera | 3 megapixel | Yes | 12 megapixel | 5 megapixel |
| Wide Camera | - | - | 16 megapixel | - |
| Tele Camera | - | - | 12 megapixel | - |
| Video Capture | QCIF (176 x 144) | - | 4K UHD | 1080p HD |
| Front Camera | - | - | 12 megapixel | 1 megapixel |
| Weight |
4 oz (113g) |
3.88 oz (110g) |
10.02 oz (284g) |
4.9 oz (139g) |
| Dimensions |
3.84" x 2.02" x 0.69" (98 x 51 x 17.5 mm) |
3.7" x 1.93" x 1.06" (94 x 49 x 26.9 mm) |
5.72" x 3.63" x 0.43" (145 x 92 x 11 mm) |
4.88" x 2.52" x 0.42" (124 x 64 x 10.7 mm) |
| Form Factor | Clamshell | Clamshell | Unique | Slab |
| Platform / OS | (proprietary) | (proprietary) | Android | Android |
| Network Bands |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
5G: 1, 2, 3, 5, 7, 20, 25, 28, 38, 41, 66, 71, 77-C, 78, 257, 260, 261 4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 46, 48, 66, 71 WCDMA: 1, 2, 5, 8 GSM: 850, 900, 1800, 1900 |
4G LTE: 4, 17 WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | HSDPA 3.6 | GPRS | NR (5G) | LTE (Cat 3) |
| Features | ||||
| Fingerprint Reader | - | - |
Yes stand-alone |
- |
| Flashlight | - | - | Yes | - |
| GPS / Location | Yes | - | n/a | n/a |
| Ruggedized | - | - | - | Yes |
| Water-Resistant | - | - | - |
Yes IPX7 (snorkeling) |
| Accessibility | ||||
| Adjustable Text Size | - | - | n/a | n/a |
| Hearing Aid Compatible | Yes | - | Yes | Yes |
| Multiple Languages | Yes | Yes | n/a | n/a |
| TTY/TDD (Digital) | Yes | - | - | Yes |
| Alerts | ||||
| Extra Display | Yes | Yes | - | - |
| Ringer Profiles | Yes | Yes | - | - |
| Connectivity | ||||
| Bluetooth |
Yes Classic Audio |
- | Yes |
Yes Classic Audio |
| Infrared (IR) | - | Yes | - | - |
| Mobile Hotspot | - | - | n/a | n/a |
| NFC | - | - | Yes | - |
| USB |
Yes Micro-USB |
- |
Yes USB Type C |
Yes |
| Wi-Fi | - | - |
Yes 6 (802.11 a,ac,ax,b,g,n) |
Yes 4 (802.11 b,g,n) |
| Contacts | ||||
| Picture ID | Yes | - | n/a | n/a |
| Ringer ID | Yes | Yes | n/a | n/a |
| Voice Dialing | - | - | n/a | n/a |
| Customization | ||||
| Custom Graphics | Yes | Yes | n/a | n/a |
| Custom Ringtones | Yes | Yes | n/a | n/a |
| Real-Music Ringers | Yes | - | n/a | n/a |
| Data & Network | ||||
| Data Tethering | Yes | Yes | n/a | n/a |
| Dual-SIM | - | - | Yes | - |
| WAP / Web Browser | Yes | Yes | n/a | n/a |
| Input | ||||
| Predictive Text Entry | Yes | Yes | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | - | - | Yes | Yes |
| Memory | ||||
| Memory Card Slot | Yes | - | - | Yes |
| Messaging | ||||
| Email Client | Yes | - | n/a | n/a |
| Instant Messaging | Yes | - | n/a | n/a |
| MMS | Yes | Yes | n/a | n/a |
| Text Messaging Templates | Yes | Yes | n/a | n/a |
| Music | ||||
| Headphone Jack (3.5mm) | - | - | - | Yes |
| Music Player | Yes | - | n/a | n/a |
| Stereo Speakers | - | - | Yes | - |
| Photo & Video | ||||
| Miracast | - | - | Yes | - |
| TV Output | - | - | Yes | - |
| Power | ||||
| Fast Charging | - | - | Yes | - |
| Productivity | ||||
| Alarm | Yes | Yes | n/a | n/a |
| Calculator | Yes | Yes | n/a | n/a |
| Calendar | Yes | Yes | n/a | n/a |
| Voice Memo | Yes | Yes | n/a | n/a |
| Software | ||||
| Games | Yes | Yes | n/a | n/a |
| Java (J2ME) | Yes | - | n/a | n/a |
| Voice | ||||
| HD Voice | - | - | Yes | - |
| Headset Jack (2.5 mm) | - | Yes | n/a | n/a |
| Speaker Phone | Yes | - | Yes | Yes |
| ZTE Z331 | Sharp GX-10 / GX-10i | Microsoft Surface Duo 2 | Kyocera Hydro XTRM (GSM) | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | ZTE Z331 | Sharp GX-10 / GX-10i | Microsoft Surface Duo 2 | Kyocera Hydro XTRM (GSM) |
