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| Phone | Samsung Knack U310 | ZTE Z431 / Altair | Sanyo SCP-3100 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
2.2" diag. 4 : 3 |
2.4" diag. 4 : 3 |
? |
| Display Resolution & Type |
176 x 220 pixels (~128 ppi) LCD (TFT/TFD) |
320 x 240 pixels (~167 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (STN) |
| Display Refresh | ? | ? | ? |
| Battery | 1,000 mAh | 1,000 mAh | 1,000 mAh |
| Processor | ? | ? | ? |
| RAM | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | - | 2 megapixel | Yes |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | - | QVGA (320 x 240) | - |
| Front Camera | - | - | - |
| Weight |
3.63 oz (103g) |
3.52 oz (100g) |
3.5 oz (99g) |
| Dimensions |
3.78" x 2.01" x 0.74" (96 x 51 x 18.8 mm) |
4.49" x 2.39" x 0.41" (114 x 61 x 10.4 mm) |
3.31" x 1.83" x 1.01" (84 x 46 x 25.7 mm) |
| Form Factor | Clamshell | Slab | Clamshell |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
CDMA: 850, 1900 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
| Data Technology | - | ? | 1xRTT |
| Features | |||
| GPS / Location | Yes | Yes | Yes |
| Accessibility | |||
| Adjustable Text Size | Yes | - | - |
| Hearing Aid Compatible |
Yes M4, T4 (very tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
| Multiple Languages | Yes | Yes | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes |
| Alerts | |||
| Extra Display | Yes | - | Yes |
| Ringer Profiles | - | Yes | - |
| Connectivity | |||
| Bluetooth | - | Yes | - |
| USB | - |
Yes Micro-USB |
Yes |
| Contacts | |||
| Picture ID | - | Yes | Yes |
| Ringer ID | - | Yes | Yes |
| Voice Dialing | Yes | - | Yes |
| Customization | |||
| Custom Graphics | - | Yes | Yes |
| Custom Ringtones | - | Yes | Yes |
| Real-Music Ringers | - | Yes | - |
| Data & Network | |||
| Data Tethering | - | Yes | - |
| External Antenna Jack | - | - | Yes |
| WAP / Web Browser | - | Yes | Yes |
| Input | |||
| Predictive Text Entry | Yes | Yes | Yes |
| Side Keys | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | - |
| Memory | |||
| Memory Card Slot | - | Yes | - |
| Messaging | |||
| Email Client | - | Yes | - |
| EMS / Picture Messaging | Yes | - | - |
| MMS | - | Yes | - |
| Text Messaging Templates | - | Yes | - |
| Music | |||
| Headphone Jack (3.5mm) | - | Yes | - |
| Music Player | - | Yes | - |
| Productivity | |||
| Alarm | Yes | Yes | Yes |
| Calculator | Yes | Yes | Yes |
| Calendar | Yes | Yes | Yes |
| Voice Memo | - | Yes | Yes |
| Software | |||
| BREW | - | Yes | - |
| Games | - | Yes | Yes |
| Java (J2ME) | - | - | Yes |
| Voice | |||
| Call Screening | - | - | Yes |
| Headset Jack (2.5 mm) | Yes | - | Yes |
| Push-To-Talk | - | - | Yes |
| Speaker Phone | Yes | Yes | Yes |
| Samsung Knack U310 | ZTE Z431 / Altair | Sanyo SCP-3100 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung Knack U310 | ZTE Z431 / Altair | Sanyo SCP-3100 |
