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| Phone | Ericsson R278d | Samsung SCH-A990 | Microsoft Lumia 550 | Sony Ericsson T68i | Microsoft Lumia 640 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size | ? | ? |
4.7" diag. 16 : 9 |
? |
5" diag. 16 : 9 |
| Display Resolution & Type | 101 x 40 pixels |
240 x 320 pixels LCD (TFT/TFD) |
720 x 1280 pixels (~312 ppi) LCD (TFT/TFD) |
101 x 80 pixels LCD (STN) |
720 x 1280 pixels (~294 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? | ? |
| Battery | ? | 1,000 mAh | 2,100 mAh | 700 mAh | 2,500 mAh |
| Processor | ? | ? | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) | ? | 1.2 GHz Qualcomm Snapdragon 400 (MSM8926) |
| RAM | ? | ? | 1 GB | ? | 1 GB |
| Storage | ? raw hardware | ? raw hardware | 8 GB | ? raw hardware | 8 GB |
| Main Camera | - | 3 megapixel | 5 megapixel | - | 8 megapixel |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | - | ? | 720p HD | - | 1080p HD |
| Front Camera | - | - | 2 megapixel | - | 1 megapixel |
| Weight |
9.28 oz (263g) |
4.4 oz (125g) |
5.01 oz (142g) |
2.96 oz (84g) |
5.11 oz (145g) |
| Dimensions |
5.1" x 2" x 1" (130 x 51 x 25.4 mm) |
3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm) |
5.36" x 2.67" x 0.39" (136 x 68 x 9.9 mm) |
3.94" x 1.89" x 0.79" (100 x 48 x 20.1 mm) |
5.56" x 2.84" x 0.35" (141 x 72 x 8.9 mm) |
| Form Factor | Slab | Clamshell | Slab | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | Windows | (proprietary) | Windows |
| Network Bands |
TDMA: 850, 1900 AMPS: 850 |
CDMA: 850, 1900 |
4G LTE: 2, 4, 5, 7, 12, 17 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
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| Data Technology | - | EVDO r0 | LTE (Cat 4) | GPRS | LTE (Cat 4) |
| Features | |||||
| Flashlight | - | Yes | Yes | - | - |
| GPS / Location | - | Yes | n/a | - | n/a |
| Accessibility | |||||
| Adjustable Text Size | - | - | n/a | - | n/a |
| Hearing Aid Compatible | - |
Yes M3 (mostly compatible) |
Yes M3, T4 (very tele-coil compatible) |
- |
Yes M3, T4 (very tele-coil compatible) |
| Multiple Languages | Yes | Yes | n/a | Yes | n/a |
| TTY/TDD (Digital) | - | Yes | Yes | - | Yes |
| Alerts | |||||
| Extra Display | - | Yes | - | - | - |
| Ringer Profiles | Yes | - | - | Yes | - |
| Connectivity | |||||
| Bluetooth | - | Yes | Yes | Yes | Yes |
| Infrared (IR) | - | - | - | Yes | - |
| Mobile Hotspot | - | - | n/a | - | n/a |
| NFC | - | - | - | - | Yes |
| USB | - | Yes |
Yes Micro-USB |
- |
Yes Micro-USB |
| Wi-Fi | - | - |
Yes 4 (802.11 b,g,n) |
- |
Yes 4 (802.11 b,g,n) |
| Contacts | |||||
| Picture ID | - | Yes | n/a | Yes | n/a |
| Ringer ID | - | Yes | n/a | Yes | n/a |
| Voice Dialing | - | Yes | n/a | Yes | n/a |
| Customization | |||||
| Custom Graphics | - | Yes | n/a | Yes | n/a |
| Custom Ringtones | Yes | Yes | n/a | Yes | n/a |
| Real-Music Ringers | - | Yes | n/a | - | n/a |
| Data & Network | |||||
| Data Tethering | Yes | Yes | n/a | Yes | n/a |
| WAP / Web Browser | Yes | Yes | n/a | Yes | n/a |
| Input | |||||
| Predictive Text Entry | Yes | Yes | n/a | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Touch Screen | - | - |
Yes Capacitive |
- |
Yes Capacitive |
| Memory | |||||
| Memory Card Slot | - | Yes | Yes | - | Yes |
| Messaging | |||||
| Email Client | - | - | n/a | Yes | n/a |
| EMS / Picture Messaging | - | Yes | n/a | Yes | n/a |
| MMS | - | Yes | n/a | Yes | n/a |
| Text Messaging Templates | - | Yes | n/a | Yes | n/a |
| Music | |||||
| FM Radio | - | - | Yes | - | Yes |
| Headphone Jack (3.5mm) | - | - | Yes | - | Yes |
| Music Player | - | Yes | n/a | - | n/a |
| Stereo Speakers | - | Yes | - | - | - |
| Photo & Video | |||||
| DLNA | - | - | - | - | Yes |
| Miracast | - | - | - | - | Yes |
| TV Output | - | Yes | - | - | - |
| Productivity | |||||
| Alarm | Yes | Yes | n/a | 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 | - | Yes | n/a | Yes | n/a |
| Software | |||||
| BREW | - | Yes | n/a | - | n/a |
| Games | - | Yes | n/a | Yes | n/a |
| Voice | |||||
| HD Voice | - | - | Yes | - | Yes |
| Speaker Phone | - | Yes | Yes | - | Yes |
| Ericsson R278d | Samsung SCH-A990 | Microsoft Lumia 550 | Sony Ericsson T68i | Microsoft Lumia 640 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Ericsson R278d | Samsung SCH-A990 | Microsoft Lumia 550 | Sony Ericsson T68i | Microsoft Lumia 640 |
