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| Phone | Samsung SGH-D900 / Black Carbon | AT&T Maestro 3 | Motorola Moto g7 play / REVVLRY / g7 Optimo | ZTE Z222 / Z223 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
6.5" diag. 20 : 9 |
5.7" diag. 19 : 9 |
2" diag. 4 : 3 |
| Display Resolution & Type |
240 x 320 pixels LCD (TFT/TFD) |
720 x 1600 pixels (~270 ppi) LCD (TFT/TFD) |
720 x 1512 pixels (~294 ppi) LCD (TFT/TFD) |
176 x 220 pixels (~141 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | 60 Hz | ? |
| Battery | 800 mAh | 3,900 mAh | 3,000 mAh | 900 mAh |
| Processor | ? | 2 GHz MediaTek Helio A22 (MT6761) | 1.8 GHz Qualcomm Snapdragon 632 | QSC6270 |
| RAM | ? | 3 GB | 2 GB * | 64 MB |
| Storage | ? raw hardware | 32 GB | 32 GB | 128 MB |
| Main Camera | 3 megapixel | 13 megapixel | 13 megapixel | Yes |
| Wide Camera | - | 5 megapixel | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | ? | 1080p HD | 1080p HD | ? |
| Front Camera | - | 5 megapixel | 8 megapixel | - |
| Weight |
3.28 oz (93g) |
6.24 oz (177g) |
5.33 oz (151g) |
3.24 oz (92g) |
| Dimensions |
4.07" x 2.01" x 0.51" (103 x 51 x 13 mm) |
6.58" x 3.03" x 0.33" (167 x 77 x 8.4 mm) |
5.85" x 2.81" x 0.32" (149 x 71 x 8.2 mm) |
3.76" x 1.92" x 0.73" (96 x 49 x 18.5 mm) |
| Form Factor | Slide | Slab | Slab | Clamshell |
| Platform / OS | (proprietary) | Android | Android | (proprietary) |
| Network Bands |
GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 4, 5, 12, 14, 30 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 20, 25, 26, 29, 30, 38, 39, 40, 41, 66, 71 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
WCDMA: 2, 5 GSM: 850, 1900 |
| Data Technology | EDGE | LTE (Cat 4) | LTE (Cat 6) | HSDPA 3.6 |
| Features | ||||
| Barometer | - | Yes | - | - |
| Fingerprint Reader | - |
Yes stand-alone |
Yes stand-alone |
- |
| Flashlight | - | Yes | Yes | - |
| Water-Resistant | - | - | Yes | - |
| Accessibility | ||||
| Hearing Aid Compatible | - |
Yes M4, T4 (very tele-coil compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
| Multiple Languages | Yes | n/a | n/a | Yes |
| TTY/TDD (Digital) | - | - | Yes | Yes |
| Alerts | ||||
| Extra Display | - | - | - | Yes |
| Ringer Profiles | - | - | - | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| USB | Yes |
Yes USB Type C |
Yes USB Type C |
Yes Micro-USB |
| Wi-Fi | - |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 4 (802.11 a,b,g,n) |
- |
| Contacts | ||||
| Picture ID | Yes | n/a | n/a | Yes |
| Ringer ID | Yes | n/a | n/a | Yes |
| Customization | ||||
| Custom Graphics | Yes | n/a | n/a | Yes |
| Custom Ringtones | Yes | n/a | n/a | 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 |
| Input | ||||
| Predictive Text Entry | Yes | n/a | n/a | Yes |
| Side Keys | 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 | Yes |
| EMS / Picture Messaging | Yes | n/a | n/a | - |
| MMS | Yes | n/a | n/a | Yes |
| Text Messaging Templates | Yes | n/a | n/a | Yes |
| Music | ||||
| FM Radio | - | - | Yes | Yes * |
| Headphone Jack (3.5mm) | - | Yes | Yes | - |
| Music Player | Yes | n/a | n/a | - |
| Photo & Video | ||||
| TV Output | Yes | - | - | - |
| Power | ||||
| Fast Charging | - | - | Yes | - |
| Productivity | ||||
| Alarm | Yes | n/a | n/a | Yes |
| Calculator | Yes | n/a | n/a | Yes |
| Calendar | Yes | n/a | n/a | Yes |
| To-Do List | Yes | n/a | n/a | - |
| Voice Memo | Yes | n/a | n/a | Yes |
| Software | ||||
| Games | Yes | n/a | n/a | Yes |
| Java (J2ME) | Yes | n/a | n/a | Yes |
| Voice | ||||
| HD Voice | - | Yes | Yes | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| * Some versions only | ||||
| Samsung SGH-D900 / Black Carbon | AT&T Maestro 3 | Motorola Moto g7 play / REVVLRY / g7 Optimo | ZTE Z222 / Z223 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-D900 / Black Carbon | AT&T Maestro 3 | Motorola Moto g7 play / REVVLRY / g7 Optimo | ZTE Z222 / Z223 |
