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| Phone | Ericsson R278d | LG K20 / Harmony / Grace | Cricket Debut S2 / AT&T Calypso 4 | Samsung Jack i637 | BlackBerry Curve 9370 |
| Current U.S. Carriers | (none) | (none) | AT&T | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size | ? |
5.3" diag. 16 : 9 |
6.1" diag. 19.5 : 9 |
2.4" diag. 4 : 3 |
2.4" diag. 4 : 3 |
| Display Resolution & Type | 101 x 40 pixels |
720 x 1280 pixels (~277 ppi) LCD (TFT/TFD) |
720 x 1560 pixels (~282 ppi) LCD (TFT/TFD) |
320 x 240 pixels (~167 ppi) LCD (TFT/TFD) |
480 x 360 pixels (~246 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | 60 Hz | ? | ? |
| Battery | ? | 2,800 mAh | 3,000 mAh | 1,480 mAh | 1,000 mAh |
| Processor | ? | 1.4 GHz Qualcomm Snapdragon 425 (MSM8917) | 2 GHz MediaTek Helio A22 (MT6761WB) | ? | 800 MHz Marvell |
| RAM | ? | 1.5 GB | 3 GB | ? | ? |
| Storage | ? raw hardware | 16 GB | 64 GB | ? raw hardware | 1 GB |
| Main Camera | - | 8 megapixel | 8 megapixel | 3 megapixel | 5 megapixel |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | - | 1080p HD | ? | ? | VGA (640 x 480) |
| Front Camera | - | 5 megapixel | 5 megapixel | - | - |
| Weight |
9.28 oz (263g) |
5 oz (142g) |
5.64 oz (160g) |
3.6 oz (102g) |
3.49 oz (99g) |
| Dimensions |
5.1" x 2" x 1" (130 x 51 x 25.4 mm) |
5.9" x 3" x 0.3" (150 x 76 x 7.6 mm) |
6.11" x 2.87" x 0.34" (155 x 73 x 8.6 mm) |
4.4" x 2.4" x 0.5" (112 x 61 x 12.7 mm) |
4.29" x 2.36" x 0.43" (109 x 60 x 10.9 mm) |
| Form Factor | Slab | Slab | Slab | Slab | Slab |
| Platform / OS | (proprietary) | Android | Android | Windows Mobile Standard | BlackBerry OS |
| Network Bands |
TDMA: 850, 1900 AMPS: 850 |
4G LTE: 2, 4, 5, 12 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30, 66 WCDMA: 1, 2, 4, 5, 8 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 GSM: 850, 900, 1800, 1900 |
| Data Technology | - | LTE (Cat 4) | LTE (Cat 4) | HSDPA 3.6 | EVDO rA |
| Features | |||||
| Flashlight | - | Yes | Yes | - | - |
| GPS / Location | - | n/a | n/a | n/a | n/a |
| Accessibility | |||||
| Adjustable Text Size | - | n/a | n/a | n/a | n/a |
| Hearing Aid Compatible | - |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
Yes M3 (mostly compatible) |
Yes M3 (mostly compatible) |
| Multiple Languages | Yes | n/a | n/a | n/a | n/a |
| TTY/TDD (Digital) | - | Yes | - | - | Yes |
| Alerts | |||||
| Ringer Profiles | Yes | - | - | Yes | Yes |
| Connectivity | |||||
| Bluetooth | - | Yes | Yes | Yes | Yes |
| NFC | - | Yes * | - | - | Yes |
| USB | - |
Yes Micro-USB |
Yes USB Type C |
Yes |
Yes Micro-USB |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 802.11 b,g |
Yes 4 (802.11 b,g,n) |
| Contacts | |||||
| Picture ID | - | n/a | n/a | n/a | n/a |
| Ringer ID | - | n/a | n/a | n/a | n/a |
| Voice Dialing | - | n/a | n/a | n/a | n/a |
| Customization | |||||
| Custom Graphics | - | n/a | n/a | n/a | n/a |
| Custom Ringtones | Yes | n/a | n/a | n/a | n/a |
| Real-Music Ringers | - | n/a | n/a | n/a | n/a |
| Data & Network | |||||
| Data Tethering | Yes | n/a | n/a | n/a | n/a |
| WAP / Web Browser | Yes | n/a | n/a | n/a | n/a |
| Input | |||||
| Predictive Text Entry | Yes | n/a | n/a | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | - | Yes | Yes |
| Touch Screen | - |
Yes Capacitive |
Yes Capacitive |
- | - |
| Memory | |||||
| Memory Card Slot | - | Yes | Yes | Yes | Yes |
| Messaging | |||||
| Email Client | - | n/a | n/a | n/a | n/a |
| Instant Messaging | - | n/a | n/a | n/a | n/a |
| MMS | - | n/a | n/a | n/a | n/a |
| Text Messaging Templates | - | n/a | 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 | n/a |
| Power | |||||
| Fast Charging | - | - | Yes | - | - |
| Productivity | |||||
| Alarm | Yes | n/a | n/a | n/a | n/a |
| Calculator | - | n/a | n/a | n/a | n/a |
| Calendar | - | n/a | n/a | n/a | n/a |
| To-Do List | - | n/a | n/a | n/a | n/a |
| Voice Memo | - | n/a | n/a | n/a | n/a |
| Software | |||||
| Games | - | n/a | n/a | n/a | n/a |
| Java (J2ME) | - | n/a | n/a | n/a | n/a |
| Voice | |||||
| HD Voice | - | Yes | Yes | - | - |
| Speaker Phone | - | Yes | Yes | Yes | Yes |
| * Some versions only | |||||
| Ericsson R278d | LG K20 / Harmony / Grace | Cricket Debut S2 / AT&T Calypso 4 | Samsung Jack i637 | BlackBerry Curve 9370 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Ericsson R278d | LG K20 / Harmony / Grace | Cricket Debut S2 / AT&T Calypso 4 | Samsung Jack i637 | BlackBerry Curve 9370 |
