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Phone Samsung SPH-A660 / VI660 Samsung Transform ZTE Z431 / Altair Pantech Duo C810 Samsung SGH-T229
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 3.5" diag.
5 : 3
2.4" diag.
4 : 3
2.2" diag.
4 : 3
1.7" diag.
4 : 3
Display Resolution & Type 128 x 160 pixels
LCD (Color)
320 x 480 pixels
(~165 ppi)
LCD (TFT/TFD)
320 x 240 pixels
(~167 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
128 x 160 pixels
(~121 ppi)
LCD (STN)
Display Refresh ? 60 Hz ? ? ?
Battery ? 1,500 mAh 1,000 mAh 1,320 mAh 800 mAh
Processor ? 800 MHz Samsung S3C6410, Qualcomm QSC6085 ? ARM 920t PXA27x ?
RAM ? ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera - 3 megapixel 2 megapixel 1 megapixel Yes
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - QVGA (320 x 240) QVGA (320 x 240) QVGA (320 x 240) -
Front Camera - Yes - - -
Weight 3.54 oz
(100g)
5.37 oz
(152g)
3.52 oz
(100g)
3.88 oz
(110g)
3 oz
(85g)
Dimensions 3.3" x 1.8" x 0.87"
(84 x 46 x 22.1 mm)
4.61" x 2.42" x 0.61"
(117 x 61 x 15.5 mm)
4.49" x 2.39" x 0.41"
(114 x 61 x 10.4 mm)
4.01" x 1.97" x 0.78"
(102 x 50 x 19.8 mm)
3.5" x 1.9" x 0.78"
(89 x 48 x 19.8 mm)
Form Factor Clamshell Slide Slab Slide Clamshell
Platform / OS (proprietary) Android (proprietary) Windows Mobile Standard (proprietary)
Network Bands

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

GSM: 850, 1800, 1900

Data Technology 1xRTT EVDO rA ? HSDPA 1.8 GPRS
Features 
GPS / Location Yes n/a Yes n/a -
Accessibility
Hearing Aid Compatible - Yes
M4, T3 (mostly tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
- Yes
M3, T3 (mostly tele-coil compatible)
Multiple Languages Yes n/a Yes n/a Yes
TTY/TDD (Digital) Yes Yes Yes - -
Alerts
Extra Display - - - - Yes
Ringer Profiles - - Yes Yes -
Connectivity
Bluetooth - Yes Yes Yes Yes
USB - Yes
Micro-USB
Yes
Micro-USB
Yes -
Wi-Fi - Yes
4 (802.11 b,g,n)
- - -
Contacts
Picture ID Yes n/a Yes n/a Yes
Ringer ID Yes n/a Yes n/a Yes
Voice Dialing Yes n/a - n/a -
Customization
Custom Graphics Yes n/a Yes n/a Yes
Custom Ringtones Yes n/a Yes n/a Yes
Real-Music Ringers - n/a Yes n/a Yes
Data & Network
Data Tethering Yes n/a Yes n/a -
WAP / Web Browser Yes n/a Yes n/a Yes
Input
Predictive Text Entry Yes n/a Yes n/a Yes
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - Yes Yes Yes -
Touch Screen - Yes
Capacitive
- - -
Memory
Memory Card Slot - Yes Yes Yes -
Messaging
Email Client - n/a Yes n/a -
EMS / Picture Messaging - n/a - n/a Yes
Instant Messaging - n/a - n/a Yes
MMS - n/a Yes n/a Yes
Text Messaging Templates - n/a Yes n/a Yes
Music
Headphone Jack (3.5mm) - Yes Yes - -
Music Player - n/a Yes n/a -
Productivity
Alarm Yes n/a Yes n/a Yes
Calculator Yes n/a Yes n/a Yes
Calendar Yes n/a Yes n/a Yes
To-Do List Yes n/a - n/a Yes
Voice Memo Yes n/a Yes n/a Yes
Software
BREW - n/a Yes n/a -
Games Yes n/a Yes n/a Yes
Java (J2ME) Yes n/a - n/a Yes
Voice
Headset Jack (2.5 mm) Yes n/a - n/a -
Speaker Phone - Yes Yes Yes Yes
  Samsung SPH-A660 / VI660 Samsung Transform ZTE Z431 / Altair Pantech Duo C810 Samsung SGH-T229
  X > < X > < X > < X > < X

NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SPH-A660 / VI660 Samsung Transform ZTE Z431 / Altair Pantech Duo C810 Samsung SGH-T229

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