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| Phone | Ericsson T28 World | NEC 525 | Nokia N81 | Nokia 6230i |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? | ? |
2.4" diag. 4 : 3 |
? |
| Display Resolution & Type | ? |
162 x 216 pixels LCD (TFT/TFD) |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
208 x 208 pixels LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 500 mAh | 800 mAh | 1,050 mAh | 900 mAh |
| Processor | ? | ? | 369 MHz ARM 11 | ? |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | 8 GB * | ? raw hardware |
| Main Camera | - | Yes | 2 megapixel | 1 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | - | VGA (640 x 480) | QCIF (176 x 144) |
| Front Camera | - | - | - | - |
| Weight |
3.14 oz (89g) |
4.03 oz (114g) |
4.94 oz (140g) |
3.49 oz (99g) |
| Dimensions |
3.9" x 2" x 0.6" (99 x 51 x 15.2 mm) |
4.12" x 1.88" x 1.06" (105 x 48 x 26.9 mm) |
4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm) |
4.06" x 1.73" x 0.79" (103 x 44 x 20.1 mm) |
| Form Factor | Flip | Clamshell | Slide | Slab |
| Platform / OS | (proprietary) | (proprietary) | S60 (Symbian) | (proprietary) |
| Network Bands |
GSM: 900, 1900 |
GSM: 850, 900, 1800, 1900 |
WCDMA: 1 GSM: 850, 900, 1800, 1900 |
GSM: 850, 1800, 1900 |
| Data Technology | - | GPRS | EDGE | EDGE |
| Features | ||||
| Accessibility | ||||
| Multiple Languages | - | Yes | n/a | Yes |
| TTY/TDD (Digital) | - | Yes | - | - |
| Alerts | ||||
| Extra Display | - | Yes | - | - |
| Ringer Profiles | Yes | Yes | Yes | Yes |
| Connectivity | ||||
| Bluetooth | - | - |
Yes Classic Audio |
Yes Classic Audio |
| Infrared (IR) | - | Yes | - | Yes |
| USB | - | Yes |
Yes Micro-USB |
Yes |
| Wi-Fi | - | - |
Yes 802.11 b,g |
- |
| Contacts | ||||
| Picture ID | - | Yes | n/a | Yes |
| Ringer ID | - | Yes | n/a | - |
| Voice Dialing | Yes | Yes | n/a | Yes |
| Customization | ||||
| Changeable Body Plates | - | - | - | Yes |
| Custom Graphics | - | Yes | n/a | Yes |
| Custom Ringtones | Yes | Yes | n/a | Yes |
| Real-Music Ringers | - | - | n/a | Yes |
| Data & Network | ||||
| Data Tethering | Yes | Yes | n/a | Yes |
| WAP / Web Browser | - | Yes | n/a | Yes |
| Input | ||||
| Predictive Text Entry | - | Yes | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Memory | ||||
| Memory Card Slot | - | - | Yes * | Yes |
| Messaging | ||||
| Email Client | - | Yes | n/a | Yes |
| EMS / Picture Messaging | - | Yes | n/a | Yes |
| Instant Messaging | - | - | n/a | - |
| MMS | - | Yes | n/a | Yes |
| Text Messaging Templates | - | - | n/a | Yes |
| Music | ||||
| FM Radio | - | - | Yes | Yes |
| Headphone Jack (3.5mm) | - | - | Yes | - |
| Music Player | - | - | n/a | Yes |
| Stereo Speakers | - | - | Yes | - |
| Photo & Video | ||||
| Video Calling | - | - | n/a | - |
| Productivity | ||||
| Alarm | Yes | Yes | n/a | Yes |
| Calculator | Yes | Yes | n/a | Yes |
| Calendar | - | Yes | n/a | Yes |
| To-Do List | - | Yes | n/a | Yes |
| Voice Memo | - | Yes | n/a | Yes |
| Software | ||||
| Games | Yes | Yes | n/a | Yes |
| Java (J2ME) | - | Yes | n/a | Yes |
| Voice | ||||
| Headset Jack (2.5 mm) | - | Yes | n/a | - |
| Push-To-Talk | - | - | Yes * | Yes |
| Speaker Phone | - | - | Yes | Yes |
| * Some versions only | ||||
| Ericsson T28 World | NEC 525 | Nokia N81 | Nokia 6230i | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Ericsson T28 World | NEC 525 | Nokia N81 | Nokia 6230i |
