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| Phone | Samsung Knack U310 | Cricket Debut S2 / AT&T Calypso 4 | Samsung SCH-A530 | Ericsson R278d | Samsung Galaxy S7 |
| Current U.S. Carriers | (none) | AT&T | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
2.2" diag. 4 : 3 |
6.1" diag. 19.5 : 9 |
? | ? |
5.1" diag. 16 : 9 |
| Display Resolution & Type |
176 x 220 pixels (~128 ppi) LCD (TFT/TFD) |
720 x 1560 pixels (~282 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (STN) |
101 x 40 pixels |
1440 x 2560 pixels (~576 ppi) AMOLED |
| Display Refresh | ? | 60 Hz | ? | ? | 60 Hz |
| Battery | 1,000 mAh | 3,000 mAh | ? | ? | 3,000 mAh |
| Processor | ? | 2 GHz MediaTek Helio A22 (MT6761WB) | ? | ? | 2.2 GHz Qualcomm Snapdragon 820 (MSM8996) |
| RAM | ? | 3 GB | ? | ? | 4 GB |
| Storage | ? raw hardware | 64 GB | ? raw hardware | ? raw hardware | 32 GB |
| Main Camera | - | 8 megapixel | - | - | 12 megapixel |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | - | ? | - | - | 4K UHD |
| Front Camera | - | 5 megapixel | - | - | 5 megapixel |
| Weight |
3.63 oz (103g) |
5.64 oz (160g) |
3 oz (85g) |
9.28 oz (263g) |
5.36 oz (152g) |
| Dimensions |
3.78" x 2.01" x 0.74" (96 x 51 x 18.8 mm) |
6.11" x 2.87" x 0.34" (155 x 73 x 8.6 mm) |
3.18" x 1.67" x 0.9" (81 x 42 x 22.9 mm) |
5.1" x 2" x 1" (130 x 51 x 25.4 mm) |
5.61" x 2.74" x 0.31" (142 x 70 x 7.9 mm) |
| Form Factor | Clamshell | Slab | Clamshell | Slab | Slab |
| Platform / OS | (proprietary) | Android | (proprietary) | (proprietary) | Android |
| Network Bands |
CDMA: 850, 1900 |
4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30, 66 WCDMA: 1, 2, 4, 5, 8 |
CDMA: 850, 1900 |
TDMA: 850, 1900 AMPS: 850 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 18, 19, 20, 25, 26, 29, 30, 40, 41 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
| Data Technology | - | LTE (Cat 4) | 1xRTT | - | LTE (Cat 9) |
| Features | |||||
| Fingerprint Reader | - | - | - | - | Yes |
| Flashlight | - | Yes | - | - | Yes |
| GPS / Location | Yes | n/a | Yes | - | n/a |
| VR-ready | - | - | - | - | Yes |
| Water-Resistant | - | - | - | - |
Yes IPX8 (SCUBA) |
| Accessibility | |||||
| Adjustable Text Size | Yes | n/a | - | - | n/a |
| Hearing Aid Compatible |
Yes M4, T4 (very tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
- | - |
Yes M4, T3 (mostly tele-coil compatible) |
| Multiple Languages | Yes | n/a | Yes | Yes | n/a |
| TTY/TDD (Digital) | Yes | - | - | - | Yes |
| Alerts | |||||
| Extra Display | Yes | - | Yes | - | - |
| Ringer Profiles | - | - | - | Yes | - |
| Connectivity | |||||
| Bluetooth | - | Yes | - | - | Yes |
| MirrorLink | - | - | - | - | Yes |
| NFC | - | - | - | - | Yes |
| USB | - |
Yes USB Type C |
- | - |
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 | - | n/a |
| Ringer ID | - | n/a | Yes | - | n/a |
| Voice Dialing | Yes | n/a | Yes | - | n/a |
| Customization | |||||
| Custom Graphics | - | n/a | Yes | - | n/a |
| Custom Ringtones | - | n/a | Yes | Yes | n/a |
| Data & Network | |||||
| Data Tethering | - | n/a | Yes | Yes | n/a |
| Dual-SIM | - | - | - | - | Yes |
| WAP / Web Browser | - | n/a | Yes | Yes | n/a |
| Input | |||||
| Predictive Text Entry | Yes | n/a | Yes | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Touch Screen | - |
Yes Capacitive |
- | - |
Yes Capacitive |
| Memory | |||||
| Memory Card Slot | - | Yes | - | - | Yes |
| Messaging | |||||
| EMS / Picture Messaging | Yes | n/a | - | - | n/a |
| Music | |||||
| Headphone Jack (3.5mm) | - | Yes | - | - | Yes |
| Photo & Video | |||||
| DLNA | - | - | - | - | Yes |
| Miracast | - | - | - | - | Yes |
| Power | |||||
| Fast Charging | - | Yes | - | - | Yes |
| Wireless Charging | - | - | - | - | Yes |
| Productivity | |||||
| Alarm | Yes | n/a | Yes | Yes | n/a |
| Calculator | Yes | n/a | Yes | - | n/a |
| Calendar | Yes | n/a | Yes | - | n/a |
| To-Do List | - | n/a | Yes | - | n/a |
| Voice Memo | - | n/a | Yes | - | n/a |
| Software | |||||
| BREW | - | n/a | Yes | - | n/a |
| Games | - | n/a | Yes | - | n/a |
| Voice | |||||
| HD Voice | - | Yes | - | - | Yes |
| Headset Jack (2.5 mm) | Yes | n/a | Yes | - | n/a |
| Speaker Phone | Yes | Yes | - | - | Yes |
| Samsung Knack U310 | Cricket Debut S2 / AT&T Calypso 4 | Samsung SCH-A530 | Ericsson R278d | Samsung Galaxy S7 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung Knack U310 | Cricket Debut S2 / AT&T Calypso 4 | Samsung SCH-A530 | Ericsson R278d | Samsung Galaxy S7 |
