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| Phone | Nokia 6155i | Samsung SGH-X640 | Sony Ericsson T61c | Nokia N900 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? | ? | ? |
3.5" diag. 5 : 3 |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
128 x 160 pixels LCD (TFT/TFD) |
? |
800 x 480 pixels (~267 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 1,070 mAh | 800 mAh | ? | 1,320 mAh |
| Processor | ? | ? | ? | 600 MHz TI OMAP 3430 (ARM Cortex-A8) |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 1 megapixel | Yes | - | 5 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | sub-QCIF (128 x 96) | - | - | ? |
| Front Camera | - | - | - | - |
| Weight |
4.44 oz (126g) |
3 oz (85g) |
4.4 oz (125g) |
6.38 oz (181g) |
| Dimensions |
3.41" x 1.79" x 1.02" (87 x 45 x 25.9 mm) |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
4.8" x 2.13" x 0.92" (122 x 54 x 23.4 mm) |
4.36" x 2.35" x 0.69" (111 x 60 x 17.6 mm) |
| Form Factor | Clamshell | Clamshell | Slab | Slide |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
CDMA: 850, 1900 AMPS: 850 |
GSM: 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
WCDMA: 1, 4, 8 GSM: 850, 900, 1800, 1900 |
| Data Technology | 1xRTT | GPRS | 1xRTT | HSPA 10.1 |
| Features | ||||
| GPS / Location | Yes | - | Yes | Yes |
| Accessibility | ||||
| Hearing Aid Compatible | - | - | - | Yes |
| Multiple Languages | Yes | Yes | Yes | Yes |
| TTY/TDD (Digital) | Yes | - | - | - |
| Alerts | ||||
| Extra Display | Yes | - | - | - |
| Ringer Profiles | Yes | - | Yes | - |
| Connectivity | ||||
| Bluetooth | - | - | Yes |
Yes Classic Audio |
| Infrared (IR) | Yes | - | - | - |
| USB | Yes | - | - |
Yes Micro-USB |
| Wi-Fi | - | - | - |
Yes 802.11 b,g |
| Contacts | ||||
| Picture ID | Yes | Yes | - | Yes |
| Ringer ID | Yes | Yes | - | - |
| Voice Dialing | Yes | - | Yes | - |
| Customization | ||||
| Changeable Body Plates | - | - | Yes | - |
| Custom Graphics | Yes | Yes | Yes | Yes |
| Custom Ringtones | Yes | Yes | Yes | Yes |
| Real-Music Ringers | Yes | - | - | Yes |
| Data & Network | ||||
| Data Tethering | Yes | - | Yes | - |
| WAP / Web Browser | Yes | Yes | Yes | Yes |
| Input | ||||
| Predictive Text Entry | Yes | Yes | Yes | - |
| Side Keys | Yes | Yes | Yes | Yes |
| Stylus | - | - | - | Yes |
| Text Keyboard, Hardware | - | - | - | Yes |
| Touch Screen | - | - | - | Yes |
| Memory | ||||
| Memory Card Slot | - | - | - | Yes |
| Messaging | ||||
| Email Client | - | - | - | Yes |
| EMS / Picture Messaging | - | Yes | Yes | - |
| Instant Messaging | - | - | - | Yes |
| MMS | Yes | Yes | - | - |
| Text Messaging Templates | Yes | Yes | Yes | - |
| Music | ||||
| FM Radio | Yes | - | - | - |
| FM Transmitter | - | - | - | Yes |
| Headphone Jack (3.5mm) | - | - | - | Yes |
| Music Player | - | - | - | Yes |
| Stereo Speakers | - | - | - | Yes |
| Photo & Video | ||||
| DLNA | - | - | - | Yes |
| TV Output | - | - | - | Yes |
| Video Calling | - | - | - | Yes * |
| Productivity | ||||
| Alarm | Yes | Yes | Yes | Yes |
| Calculator | Yes | Yes | Yes | Yes |
| Calendar | Yes | Yes | Yes | Yes |
| To-Do List | Yes | Yes | - | - |
| Voice Memo | Yes | Yes | Yes | - |
| Software | ||||
| BREW | Yes * | - | - | - |
| Games | Yes | Yes | Yes | Yes |
| Java (J2ME) | Yes * | Yes | - | - |
| Voice | ||||
| Headset Jack (2.5 mm) | Yes | Yes | Yes | - |
| Push-To-Talk | Yes * | - | - | - |
| Speaker Phone | Yes | Yes | - | Yes |
| * Some versions only | ||||
| Nokia 6155i | Samsung SGH-X640 | Sony Ericsson T61c | Nokia N900 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia 6155i | Samsung SGH-X640 | Sony Ericsson T61c | Nokia N900 |
