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| Phone | Ericsson R278d | Samsung SGH-A657 | Nokia N73 | Motorola i450 / i455 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? | ? | ? | ? |
| Display Resolution & Type | 101 x 40 pixels |
176 x 220 pixels LCD (TFT/TFD) |
240 x 320 pixels LCD (TFT/TFD) |
130 x 130 pixels LCD (STN) |
| Display Refresh | ? | ? | ? | ? |
| Battery | ? | 1,420 mAh | 1,100 mAh | ? |
| Processor | ? | ? | ? | ? |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | - | - | 3 megapixel | - |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | - | CIF (352 x 288) | - |
| Front Camera | - | - | - | - |
| Weight |
9.28 oz (263g) |
4.34 oz (123g) |
4.09 oz (116g) |
4.5 oz (128g) |
| Dimensions |
5.1" x 2" x 1" (130 x 51 x 25.4 mm) |
4.53" x 2.05" x 0.77" (115 x 52 x 19.6 mm) |
4.33" x 1.93" x 0.75" (110 x 49 x 19.1 mm) |
3.5" x 2" x 1.1" (89 x 51 x 27.9 mm) |
| Form Factor | Slab | Slab | Slab | Clamshell |
| Platform / OS | (proprietary) | (proprietary) | S60 (Symbian) | (proprietary) |
| Network Bands |
TDMA: 850, 1900 AMPS: 850 |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
WCDMA: 1 GSM: 850, 900, 1800, 1900 |
iDEN: 800 |
| Data Technology | - | HSDPA 3.6 | EDGE | - |
| Features | ||||
| Flashlight | - | Yes | - | - |
| GPS / Location | - | Yes | n/a | Yes |
| Ruggedized | - | Yes | - | - |
| Accessibility | ||||
| Hearing Aid Compatible | - | - | - |
Yes M3 (mostly compatible) |
| Multiple Languages | Yes | Yes | n/a | Yes |
| TTY/TDD (Digital) | - | Yes | - | Yes |
| Alerts | ||||
| Extra Display | - | - | - | Yes |
| Ringer Profiles | Yes | - | Yes | Yes |
| Connectivity | ||||
| Bluetooth | - | Yes | Yes | - |
| Infrared (IR) | - | - | Yes | - |
| USB | - | Yes | Yes | Yes |
| Contacts | ||||
| Picture ID | - | Yes | n/a | Yes |
| Ringer ID | - | Yes | n/a | Yes |
| Voice Dialing | - | - | n/a | Yes |
| Customization | ||||
| Custom Graphics | - | Yes | n/a | Yes |
| Custom Ringtones | Yes | Yes | n/a | Yes |
| Real-Music Ringers | - | Yes | n/a | Yes * |
| Data & Network | ||||
| Data Tethering | Yes | Yes | n/a | Yes |
| WAP / Web Browser | Yes | Yes | n/a | Yes |
| Input | ||||
| Predictive Text Entry | Yes | Yes | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Memory | ||||
| Memory Card Slot | - | Yes | Yes | - |
| Messaging | ||||
| Email Client | - | Yes | n/a | - |
| Instant Messaging | - | Yes | n/a | - |
| MMS | - | Yes | n/a | Yes |
| Text Messaging Templates | - | Yes | n/a | Yes |
| Music | ||||
| FM Radio | - | - | Yes | - |
| Music Player | - | Yes | n/a | - |
| Stereo Speakers | - | - | Yes | - |
| Photo & Video | ||||
| Video Calling | - | - | n/a | - |
| Productivity | ||||
| Alarm | Yes | Yes | n/a | - |
| Calculator | - | Yes | n/a | - |
| Calendar | - | Yes | n/a | Yes |
| To-Do List | - | Yes | n/a | - |
| Voice Memo | - | Yes | n/a | Yes |
| Software | ||||
| Games | - | Yes | n/a | Yes |
| Java (J2ME) | - | Yes | n/a | Yes |
| Voice | ||||
| Headset Jack (2.5 mm) | - | - | n/a | Yes |
| Push-To-Talk | - | Yes | Yes * | Yes |
| Speaker Phone | - | Yes | Yes | Yes |
| * Some versions only | ||||
| Ericsson R278d | Samsung SGH-A657 | Nokia N73 | Motorola i450 / i455 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Ericsson R278d | Samsung SGH-A657 | Nokia N73 | Motorola i450 / i455 |
