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Phone | Samsung SGH-X640 | Alcatel Pop Astro | Nokia 6255i / 6256i | Samsung SCH-U430 |
Current U.S. Carriers | (none) | (none) | (none) | (none) |
Global Availability | Released | Released | Released | Released |
Specifications | ||||
---|---|---|---|---|
Display Size | ? |
4.5" diag. 16 : 9 |
? | ? |
Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
540 x 960 pixels (~245 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (TFT/TFD) |
128 x 160 pixels LCD (TFT/TFD) |
Display Refresh | ? | 60 Hz | ? | ? |
Battery | 800 mAh | 2,000 mAh | 1,070 mAh | 1,000 mAh |
Processor | ? | 1.5 GHz MediaTek MTK6732 | ? | ? |
RAM | ? | 1 GB | ? | ? |
Storage | ? raw hardware | 4 GB | ? raw hardware | ? raw hardware |
Main Camera | Yes | 5 megapixel | Yes | Yes |
Wide Camera | - | - | - | - |
Tele Camera | - | - | - | - |
Video Capture | - | 1080p HD | ? | - |
Front Camera | - | Yes | - | - |
Weight |
3 oz (85g) |
5.11 oz (145g) |
4.23 oz (120g) |
3.21 oz (91g) |
Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
5.23" x 2.57" x 0.39" (133 x 65 x 9.9 mm) |
3.36" x 1.87" x 0.97" (85 x 47 x 24.6 mm) |
3.67" x 1.85" x 0.78" (93 x 47 x 19.8 mm) |
Form Factor | Clamshell | Slab | Clamshell | Clamshell |
Platform / OS | (proprietary) | Android | (proprietary) | (proprietary) |
Network Bands |
GSM: 900, 1800, 1900 |
4G LTE: 2, 4, 12 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
CDMA: 850, 1900 |
Data Technology | GPRS | LTE (Cat 4) | 1xRTT | 1xRTT |
Features | ||||
Flashlight | - | Yes | - | - |
GPS / Location | - | n/a | Yes | Yes |
Accessibility | ||||
Adjustable Text Size | - | n/a | - | Yes |
Hearing Aid Compatible | - |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M4 (very compatible) |
Yes M4, T4 (very tele-coil compatible) |
Multiple Languages | Yes | n/a | Yes | Yes |
TTY/TDD (Digital) | - | Yes | Yes | Yes |
Alerts | ||||
Extra Display | - | - | Yes | Yes |
Ringer Profiles | - | - | Yes | - |
Connectivity | ||||
Bluetooth | - | Yes | Yes | Yes |
Infrared (IR) | - | - | Yes | - |
Mobile Hotspot | - | n/a | - | - |
USB | - |
Yes Micro-USB |
Yes | - |
Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
- | - |
Contacts | ||||
Picture ID | Yes | n/a | Yes | Yes |
Ringer ID | Yes | n/a | Yes | Yes |
Voice Dialing | - | n/a | Yes | Yes |
Customization | ||||
Custom Graphics | Yes | n/a | Yes | Yes |
Custom Ringtones | Yes | n/a | Yes | Yes |
Real-Music Ringers | - | n/a | Yes | - |
Data & Network | ||||
Data Tethering | - | n/a | Yes | - |
WAP / Web Browser | Yes | n/a | Yes | Yes |
Input | ||||
Predictive Text Entry | Yes | n/a | Yes | Yes |
Side Keys | Yes | Yes | Yes | Yes |
Touch Screen | - | Yes | - | - |
Memory | ||||
Memory Card Slot | - | Yes | Yes | - |
Messaging | ||||
Email Client | - | n/a | Yes | Yes |
EMS / Picture Messaging | Yes | n/a | Yes * | Yes |
Instant Messaging | - | n/a | - | Yes |
MMS | Yes | n/a | Yes | Yes |
Text Messaging Templates | Yes | n/a | Yes | Yes |
Music | ||||
FM Radio | - | Yes | Yes | - |
Headphone Jack (3.5mm) | - | Yes | - | - |
Music Player | - | n/a | Yes * | - |
Productivity | ||||
Alarm | Yes | n/a | Yes | Yes |
Calculator | Yes | n/a | Yes | Yes |
Calendar | Yes | n/a | Yes | Yes |
To-Do List | Yes | n/a | Yes | - |
Voice Memo | Yes | n/a | Yes | Yes |
Software | ||||
BREW | - | n/a | Yes * | Yes |
Games | Yes | n/a | Yes | Yes |
Java (J2ME) | Yes | n/a | Yes * | - |
Voice | ||||
HD Voice | - | Yes | - | - |
Headset Jack (2.5 mm) | Yes | n/a | Yes | Yes |
Speaker Phone | Yes | Yes | Yes | Yes |
* Some versions only | ||||
Samsung SGH-X640 | Alcatel Pop Astro | Nokia 6255i / 6256i | Samsung SCH-U430 |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
Phone | Samsung SGH-X640 | Alcatel Pop Astro | Nokia 6255i / 6256i | Samsung SCH-U430 |