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| Phone | Ericsson R278d | Sony Ericsson S710a | Sony Ericsson T61c | Ericsson T66 | Essential Phone |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size | ? | ? | ? | ? |
5.7" diag. 17.5 : 9 |
| Display Resolution & Type | 101 x 40 pixels |
240 x 320 pixels LCD (TFT/TFD) |
? | ? |
1312 x 2560 pixels (~504 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? | 60 Hz |
| Battery | ? | 780 mAh | ? | ? | 3,040 mAh |
| Processor | ? | ? | ? | ? | 2.5 GHz Qualcomm Snapdragon 835 (MSM8998) |
| RAM | ? | ? | ? | ? | 4 GB |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware | 128 GB |
| Main Camera | - | 1 megapixel | - | - | 13 megapixel |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | - | QCIF (176 x 144) | - | - | 4K UHD |
| Front Camera | - | - | - | - | 8 megapixel |
| Weight |
9.28 oz (263g) |
4.83 oz (137g) |
4.4 oz (125g) |
2.08 oz (59g) |
6.53 oz (185g) |
| Dimensions |
5.1" x 2" x 1" (130 x 51 x 25.4 mm) |
4.23" x 1.93" x 0.96" (107 x 49 x 24.4 mm) |
4.8" x 2.13" x 0.92" (122 x 54 x 23.4 mm) |
3.62" x 1.61" x 0.69" (92 x 41 x 17.5 mm) |
5.57" x 2.8" x 0.31" (141 x 71 x 7.8 mm) |
| Form Factor | Slab | Swivel | Slab | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) | (proprietary) | Android |
| Network Bands |
TDMA: 850, 1900 AMPS: 850 |
GSM: 850, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
GSM: 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 29, 30, 40, 41, 66 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
| Data Technology | - | EDGE | 1xRTT | - | LTE (Cat 12) |
| Features | |||||
| Barometer | - | - | - | - | Yes |
| Fingerprint Reader | - | - | - | - |
Yes stand-alone |
| Flashlight | - | - | - | - | Yes |
| GPS / Location | - | - | Yes | - | n/a |
| Accessibility | |||||
| Hearing Aid Compatible | - | - | - | - | Yes |
| Multiple Languages | Yes | Yes | Yes | Yes | n/a |
| TTY/TDD (Digital) | - | Yes | - | - | Yes |
| Alerts | |||||
| Ringer Profiles | Yes | Yes | Yes | Yes | - |
| Connectivity | |||||
| Bluetooth | - |
Yes Classic Audio |
Yes | - |
Yes Classic Audio |
| Infrared (IR) | - | Yes | - | - | - |
| NFC | - | - | - | - | Yes |
| USB | - | Yes | - | - |
Yes USB Type C |
| Wi-Fi | - | - | - | - |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | |||||
| Picture ID | - | Yes | - | - | n/a |
| Ringer ID | - | Yes | - | - | n/a |
| Voice Dialing | - | Yes | Yes | - | n/a |
| Customization | |||||
| Changeable Body Plates | - | - | Yes | - | - |
| Custom Graphics | - | Yes | Yes | Yes | n/a |
| Custom Ringtones | Yes | Yes | Yes | Yes | n/a |
| Data & Network | |||||
| Data Tethering | Yes | Yes | Yes | - | n/a |
| WAP / Web Browser | Yes | Yes | Yes | Yes | n/a |
| Input | |||||
| Predictive Text Entry | Yes | Yes | Yes | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Touch Screen | - | - | - | - | Yes |
| Memory | |||||
| Memory Card Slot | - | Yes | - | - | - |
| Messaging | |||||
| Email Client | - | Yes | - | - | n/a |
| EMS / Picture Messaging | - | Yes | Yes | Yes | n/a |
| MMS | - | Yes | - | - | n/a |
| Text Messaging Templates | - | Yes | Yes | Yes | n/a |
| Music | |||||
| Music Player | - | Yes | - | - | n/a |
| Power | |||||
| Fast Charging | - | - | - | - | Yes |
| Productivity | |||||
| Alarm | Yes | Yes | Yes | Yes | n/a |
| Calculator | - | Yes | Yes | Yes | n/a |
| Calendar | - | Yes | Yes | Yes | n/a |
| To-Do List | - | Yes | - | Yes | n/a |
| Voice Memo | - | Yes | Yes | - | n/a |
| Software | |||||
| Games | - | Yes | Yes | Yes | n/a |
| Java (J2ME) | - | Yes | - | - | n/a |
| Voice | |||||
| Headset Jack (2.5 mm) | - | - | Yes | - | n/a |
| Speaker Phone | - | Yes | - | - | Yes |
| Ericsson R278d | Sony Ericsson S710a | Sony Ericsson T61c | Ericsson T66 | Essential Phone | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Ericsson R278d | Sony Ericsson S710a | Sony Ericsson T61c | Ericsson T66 | Essential Phone |
