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| Phone | Nuu F4L | Samsung SGH-X640 | Samsung SCH-A610 | ZTE Flash |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Not yet released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.8" diag. 4 : 3 |
? | ? |
4.5" diag. 16 : 9 |
| Display Resolution & Type |
240 x 320 pixels (~143 ppi) LCD (STN) |
128 x 160 pixels LCD (TFT/TFD) |
128 x 160 pixels LCD (TFT/TFD) |
720 x 1280 pixels (~326 ppi) LCD (TFT/TFD) |
| Display Refresh | 60 Hz | ? | ? | 60 Hz |
| Battery | 1,350 mAh | 800 mAh | 1,300 mAh | 1,780 mAh |
| Processor | 1.1 GHz MediaTek MT6731 | ? | ? | 1.5 GHz Qualcomm Snapdragon S4 Plus MSM8960 |
| RAM | 512 MB | ? | ? | 1 GB |
| Storage | 4 GB | ? raw hardware | ? raw hardware | 8 GB |
| Main Camera | 2 megapixel | Yes | Yes | 12 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | 720p HD | - | - | 1080p HD |
| Front Camera | Yes | - | - | 1 megapixel |
| Weight |
4.5 oz (128g) |
3 oz (85g) |
4.23 oz (120g) |
5.2 oz (147g) |
| Dimensions |
4.31" x 2.27" x 0.83" (109 x 58 x 21 mm) |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
3.5" x 1.9" x 0.9" (89 x 48 x 22.9 mm) |
5.27" x 2.56" x 0.38" (134 x 65 x 9.7 mm) |
| Form Factor | Clamshell | Clamshell | Clamshell | Slab |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) | Android |
| Network Bands |
4G LTE: 2, 4, 5, 12, 13, 66 WCDMA: 2, 4, 5 GSM: 850, 1900 |
GSM: 900, 1800, 1900 |
CDMA: 850, 1900 |
4G LTE: 25 CDMA: 800, 850, 1900 |
| Data Technology | LTE (Cat 4) | GPRS | 1xRTT | LTE (Cat 3) |
| Features | ||||
| Flashlight | Yes | - | - | - |
| GPS / Location | Yes | - | Yes | n/a |
| Accessibility | ||||
| Adjustable Text Size | Yes | - | - | n/a |
| Hearing Aid Compatible |
Yes M4, T4 (very tele-coil compatible) |
- | - |
Yes M4, T4 (very tele-coil compatible) |
| Multiple Languages | Yes | Yes | Yes | n/a |
| TTY/TDD (Digital) | Yes | - | - | Yes |
| Alerts | ||||
| Extra Display | Yes | - | - | - |
| Connectivity | ||||
| Bluetooth | Yes | - | - | Yes |
| Mobile Hotspot | - | - | - | n/a |
| NFC | - | - | - | Yes |
| USB |
Yes Micro-USB |
- | - |
Yes Micro-USB |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
- | - |
Yes 4 (802.11 b,g,n) |
| Contacts | ||||
| Picture ID | Yes | Yes | Yes | n/a |
| Ringer ID | Yes | Yes | Yes | n/a |
| Voice Dialing | - | - | Yes | n/a |
| Customization | ||||
| Custom Graphics | Yes | Yes | Yes | n/a |
| Custom Ringtones | - | Yes | Yes | n/a |
| Real-Music Ringers | - | - | - | n/a |
| Data & Network | ||||
| Data Tethering | - | - | Yes | n/a |
| WAP / Web Browser | Yes | Yes | Yes | n/a |
| Input | ||||
| Predictive Text Entry | Yes | Yes | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | - | - | - |
Yes Capacitive |
| Memory | ||||
| Memory Card Slot | Yes | - | - | Yes |
| Messaging | ||||
| Email Client | Yes | - | - | n/a |
| EMS / Picture Messaging | - | Yes | Yes | n/a |
| Instant Messaging | Yes | - | - | n/a |
| MMS | Yes | Yes | Yes | n/a |
| Text Messaging Templates | Yes | Yes | Yes | n/a |
| Music | ||||
| FM Radio | Yes | - | - | - |
| Headphone Jack (3.5mm) | Yes | - | - | Yes |
| Music Player | Yes | - | - | n/a |
| Productivity | ||||
| Alarm | Yes | Yes | Yes | n/a |
| Calculator | Yes | Yes | Yes | n/a |
| Calendar | Yes | Yes | Yes | n/a |
| To-Do List | - | Yes | Yes | n/a |
| Voice Memo | Yes | Yes | Yes | n/a |
| Software | ||||
| BREW | - | - | Yes | n/a |
| Games | - | Yes | Yes | n/a |
| Java (J2ME) | - | Yes | - | n/a |
| Voice | ||||
| HD Voice | Yes | - | - | Yes |
| Headset Jack (2.5 mm) | - | Yes | Yes | n/a |
| Speaker Phone | Yes | Yes | - | Yes |
| Nuu F4L | Samsung SGH-X640 | Samsung SCH-A610 | ZTE Flash | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nuu F4L | Samsung SGH-X640 | Samsung SCH-A610 | ZTE Flash |
