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| Phone | Samsung SGH-D520 | Huawei W1 | AT&T Vista | Motorola Moto z4 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
4" diag. 5 : 3 |
5.5" diag. 18 : 9 |
6.4" diag. 19.5 : 9 |
| Display Resolution & Type |
176 x 220 pixels LCD (TFT/TFD) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
720 x 1440 pixels (~293 ppi) LCD (TFT/TFD) |
1080 x 2340 pixels (~403 ppi) AMOLED |
| Display Refresh | ? | ? | 60 Hz | 60 Hz |
| Battery | 800 mAh | 1,950 mAh | 2,450 mAh | 3,600 mAh |
| Processor | ? | 1.2 GHz Qualcomm Snapdragon 400 MSM8230 | 2 GHz MediaTek Helio A22 (MT6761V) | 2 GHz Qualcomm Snapdragon 675 |
| RAM | ? | 512 MB | 3 GB | 4 GB |
| Storage | ? raw hardware | 4 GB | 32 GB | 128 GB |
| Main Camera | 1 megapixel | 5 megapixel | 8 megapixel | 48 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | CIF (352 x 288) | 720p HD | 1080p HD | 4K UHD |
| Front Camera | - | Yes | 5 megapixel | 25 megapixel |
| Weight |
3.32 oz (94g) |
4.41 oz (125g) |
5.51 oz (156g) |
6 oz (170g) |
| Dimensions |
3.98" x 1.81" x 0.63" (101 x 46 x 16 mm) |
4.84" x 2.5" x 0.41" (123 x 64 x 10.4 mm) |
5.88" x 2.82" x 0.35" (149 x 72 x 8.9 mm) |
6.22" x 2.96" x 0.29" (158 x 75 x 7.4 mm) |
| Form Factor | Slide | Slab | Slab | Slab |
| Platform / OS | (proprietary) | Windows | Android | Android |
| Network Bands |
GSM: 900, 1800, 1900 |
WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30 WCDMA: 1, 2, 4, 5, 8 |
4G LTE: 2, 3, 4, 5, 7, 12, 13, 20, 25, 26, 28, 29, 30, 38, 41, 66, 71 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
| Data Technology | GPRS | HSPA+ 21 | LTE (Cat 4) | LTE (Cat 12) |
| Features | ||||
| Fingerprint Reader | - | - | - | Yes |
| Flashlight | - | - | Yes | Yes |
| GPS / Location | - | n/a | n/a | n/a |
| Water-Resistant | - | - | - | Yes |
| Accessibility | ||||
| Adjustable Text Size | - | n/a | n/a | n/a |
| Hearing Aid Compatible | - |
Yes M3 (mostly compatible) |
Yes M4, T4 (very tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
| Multiple Languages | Yes | n/a | n/a | n/a |
| TTY/TDD (Digital) | - | - | - | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| NFC | - | - | - | Yes |
| USB | - |
Yes Micro-USB |
Yes USB Type C |
Yes USB Type C |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
Yes |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | ||||
| Picture ID | Yes | n/a | n/a | n/a |
| Ringer ID | Yes | n/a | n/a | n/a |
| Voice Dialing | - | n/a | n/a | n/a |
| Customization | ||||
| Custom Graphics | Yes | n/a | n/a | n/a |
| Custom Ringtones | Yes | n/a | n/a | n/a |
| Real-Music Ringers | - | n/a | n/a | n/a |
| Data & Network | ||||
| Data Tethering | Yes | n/a | n/a | n/a |
| External Antenna Jack | Yes | n/a | n/a | n/a |
| WAP / Web Browser | Yes | n/a | n/a | n/a |
| Input | ||||
| Predictive Text Entry | Yes | n/a | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | - |
Yes Capacitive |
Yes Capacitive |
Yes Capacitive |
| Memory | ||||
| Memory Card Slot | - | Yes | Yes | Yes |
| Messaging | ||||
| Email Client | Yes | n/a | n/a | n/a |
| Instant Messaging | - | n/a | n/a | n/a |
| MMS | Yes | n/a | n/a | n/a |
| Text Messaging Templates | Yes | n/a | n/a | n/a |
| Music | ||||
| FM Radio | - | - | - | Yes |
| Headphone Jack (3.5mm) | - | Yes | Yes | Yes |
| Music Player | - | n/a | n/a | n/a |
| Power | ||||
| Fast Charging | - | - | - | Yes |
| Productivity | ||||
| Alarm | Yes | n/a | n/a | n/a |
| Calculator | Yes | n/a | n/a | n/a |
| Calendar | Yes | n/a | n/a | n/a |
| To-Do List | Yes | n/a | n/a | n/a |
| Voice Memo | Yes | n/a | n/a | n/a |
| Software | ||||
| Games | Yes | n/a | n/a | n/a |
| Java (J2ME) | Yes | n/a | n/a | n/a |
| Voice | ||||
| HD Voice | - | - | Yes | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Samsung SGH-D520 | Huawei W1 | AT&T Vista | Motorola Moto z4 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-D520 | Huawei W1 | AT&T Vista | Motorola Moto z4 |
