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| Phone | Samsung Galaxy J7 (2017, GSM) / J7 Prime / Halo | ZTE Z221 | Ericsson T66 | Samsung SGH-D520 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
5.5" diag. 16 : 9 |
2" diag. 4 : 3 |
? | ? |
| Display Resolution & Type |
720 x 1280 pixels (~267 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~200 ppi) LCD (TFT/TFD) |
? |
176 x 220 pixels LCD (TFT/TFD) |
| Display Refresh | 60 Hz | ? | ? | ? |
| Battery | 3,300 mAh | 900 mAh | ? | 800 mAh |
| Processor | 1.6 GHz Samsung Exynos 7870 | ? | ? | ? |
| RAM | 2 GB | ? | ? | ? |
| Storage | 16 GB * | 142 MB | ? raw hardware | ? raw hardware |
| Main Camera | 8 megapixel | Yes | - | 1 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | 1080p HD | QCIF (176 x 144) | - | CIF (352 x 288) |
| Front Camera | Yes | - | - | - |
| Weight |
5.8 oz (164g) |
3.24 oz (92g) |
2.08 oz (59g) |
3.32 oz (94g) |
| Dimensions |
5.96" x 3.01" x 0.34" (151 x 76 x 8.6 mm) |
3.76" x 1.92" x 0.73" (96 x 49 x 18.5 mm) |
3.62" x 1.61" x 0.69" (92 x 41 x 17.5 mm) |
3.98" x 1.81" x 0.63" (101 x 46 x 16 mm) |
| Form Factor | Slab | Clamshell | Slab | Slide |
| Platform / OS | Android | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
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| Data Technology | LTE (Cat 6) | HSDPA 3.6 | - | GPRS |
| Features | ||||
| Flashlight | Yes | - | - | - |
| GPS / Location | n/a | Yes | - | - |
| Accessibility | ||||
| Hearing Aid Compatible |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
- | - |
| Multiple Languages | n/a | Yes | Yes | Yes |
| TTY/TDD (Digital) | Yes | Yes | - | - |
| Alerts | ||||
| Extra Display | - | Yes | - | - |
| Ringer Profiles | - | Yes | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | - | Yes |
| USB |
Yes Micro-USB |
Yes | - | - |
| Wi-Fi |
Yes 5 (802.11 a,ac,b,g,n) |
- | - | - |
| Contacts | ||||
| Picture ID | n/a | - | - | Yes |
| Ringer ID | n/a | - | - | Yes |
| Customization | ||||
| Custom Graphics | n/a | Yes | Yes | Yes |
| Custom Ringtones | n/a | Yes | Yes | Yes |
| Real-Music Ringers | n/a | Yes | - | - |
| Data & Network | ||||
| Data Tethering | n/a | - | - | Yes |
| External Antenna Jack | n/a | - | - | Yes |
| WAP / Web Browser | n/a | Yes | Yes | Yes |
| Input | ||||
| Predictive Text Entry | n/a | Yes | Yes | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen |
Yes Capacitive |
- | - | - |
| Memory | ||||
| Memory Card Slot | Yes | - | - | - |
| Messaging | ||||
| Email Client | n/a | Yes | - | Yes |
| EMS / Picture Messaging | n/a | - | Yes | - |
| Instant Messaging | n/a | Yes | - | - |
| MMS | n/a | Yes | - | Yes |
| Text Messaging Templates | n/a | Yes | Yes | Yes |
| Music | ||||
| FM Radio | Yes | - | - | - |
| Headphone Jack (3.5mm) | Yes | - | - | - |
| Productivity | ||||
| Alarm | n/a | Yes | Yes | Yes |
| Calculator | n/a | Yes | Yes | Yes |
| Calendar | n/a | Yes | Yes | Yes |
| To-Do List | n/a | - | Yes | Yes |
| Voice Memo | n/a | Yes | - | Yes |
| Software | ||||
| Games | n/a | Yes | Yes | Yes |
| Java (J2ME) | n/a | Yes | - | Yes |
| Voice | ||||
| HD Voice | Yes | - | - | - |
| Speaker Phone | Yes | Yes | - | Yes |
| Samsung Galaxy J7 (2017, GSM) / J7 Prime / Halo | ZTE Z221 | Ericsson T66 | Samsung SGH-D520 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung Galaxy J7 (2017, GSM) / J7 Prime / Halo | ZTE Z221 | Ericsson T66 | Samsung SGH-D520 |
