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| Phone | Ericsson R278d | Motorola A840 | Kyocera 2135 | LG TP 5250 | Samsung Knack U310 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size | ? | ? | ? | ? |
2.2" diag. 4 : 3 |
| Display Resolution & Type | 101 x 40 pixels |
176 x 220 pixels LCD (TFT/TFD) |
? | ? |
176 x 220 pixels (~128 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? | ? |
| Battery | ? | ? | 925 mAh | ? | 1,000 mAh |
| Processor | ? | ? | ? | ? | ? |
| RAM | ? | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | - | 1 megapixel | - | - | - |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | - | - | - | - | - |
| Front Camera | - | - | - | - | - |
| Weight |
9.28 oz (263g) |
4.06 oz (115g) |
4.7 oz (133g) |
3.5 oz (99g) |
3.63 oz (103g) |
| Dimensions |
5.1" x 2" x 1" (130 x 51 x 25.4 mm) |
3.7" x 1.93" x 0.92" (94 x 49 x 23.4 mm) |
5.07" x 1.89" x 1.02" (129 x 48 x 25.9 mm) |
3.3" x 1.8" x 0.98" (84 x 46 x 24.9 mm) |
3.78" x 2.01" x 0.74" (96 x 51 x 18.8 mm) |
| Form Factor | Slab | Clamshell | Slab | Clamshell | Clamshell |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
TDMA: 850, 1900 AMPS: 850 |
CDMA: 850, 1900 GSM: 900, 1800 |
CDMA: 850, 1900 AMPS: 850 |
CDMA: 1900 AMPS: 850 |
CDMA: 850, 1900 |
| Data Technology | - | 1xRTT | - | - | - |
| Features | |||||
| GPS / Location | - | Yes | - | - | Yes |
| Accessibility | |||||
| Adjustable Text Size | - | - | - | - | Yes |
| Hearing Aid Compatible | - | - | - | - | Yes |
| Multiple Languages | Yes | Yes | Yes | Yes | Yes |
| TTY/TDD (Digital) | - | Yes | - | - | Yes |
| Alerts | |||||
| Extra Display | - | Yes | - | Yes | Yes |
| Ringer Profiles | Yes | - | - | - | - |
| Connectivity | |||||
| USB | - | Yes | - | - | - |
| Contacts | |||||
| Picture ID | - | Yes | - | - | - |
| Ringer ID | - | Yes | - | - | - |
| Voice Dialing | - | Yes | - | Yes | Yes |
| Customization | |||||
| Changeable Body Plates | - | - | Yes | - | - |
| Custom Graphics | - | Yes | - | Yes | - |
| Custom Ringtones | Yes | Yes | Yes | Yes | - |
| Real-Music Ringers | - | Yes | - | - | - |
| Data & Network | |||||
| Data Tethering | Yes | Yes | Yes | Yes | - |
| WAP / Web Browser | Yes | Yes | Yes | Yes | - |
| Input | |||||
| Predictive Text Entry | Yes | Yes | Yes | Yes | Yes |
| Side Keys | Yes | Yes | - | Yes | Yes |
| Memory | |||||
| Memory Card Slot | - | Yes | - | - | - |
| Messaging | |||||
| Email Client | - | Yes | - | - | - |
| EMS / Picture Messaging | - | Yes | - | - | Yes |
| MMS | - | Yes | - | - | - |
| Text Messaging Templates | - | Yes | Yes | - | - |
| Music | |||||
| Music Player | - | Yes | - | - | - |
| Productivity | |||||
| Alarm | Yes | Yes | Yes | - | Yes |
| Calculator | - | Yes | Yes | Yes | Yes |
| Calendar | - | Yes | - | Yes | Yes |
| Voice Memo | - | - | - | Yes | - |
| Software | |||||
| BREW | - | Yes | - | - | - |
| Games | - | Yes | Yes | Yes | - |
| Voice | |||||
| Headset Jack (2.5 mm) | - | Yes | Yes | Yes | Yes |
| Speaker Phone | - | Yes | - | - | Yes |
| Ericsson R278d | Motorola A840 | Kyocera 2135 | LG TP 5250 | Samsung Knack U310 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Ericsson R278d | Motorola A840 | Kyocera 2135 | LG TP 5250 | Samsung Knack U310 |
