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Phone Samsung SCH-A610 Sanyo MM-8300 Samsung Messager R450 Casio Exilim C721 HTC G2
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? 2.1" diag.
4 : 3
2.3" diag.
4 : 3
3.7" diag.
5 : 3
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
176 x 220 pixels
(~134 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~174 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~252 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? ? 60 Hz
Battery 1,300 mAh 1,000 mAh 960 mAh 920 mAh 1,300 mAh
Processor ? ? ? ? 800 MHz Qualcomm S2 MSM7230
RAM ? ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera Yes Yes 1 megapixel 5 megapixel 5 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - QCIF (176 x 144) - QVGA (320 x 240) 720p HD
Front Camera - - - - -
Weight 4.23 oz
(120g)
3.6 oz
(102g)
4.58 oz
(130g)
4.48 oz
(127g)
6.5 oz
(184g)
Dimensions 3.5" x 1.9" x 0.9"
(89 x 48 x 22.9 mm)
3.35" x 1.85" x 0.97"
(85 x 47 x 24.6 mm)
4.4" x 2" x 0.7"
(112 x 51 x 17.8 mm)
4.06" x 1.97" x 0.78"
(103 x 50 x 19.9 mm)
4.68" x 2.37" x 0.55"
(119 x 60 x 14 mm)
Form Factor Clamshell Clamshell Slab Clamshell Slab
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary) Android
Network Bands

CDMA: 850, 1900

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1700, 1900

CDMA: 850, 1900

WCDMA: 1, 4

GSM: 850, 900, 1800, 1900

Data Technology 1xRTT 1xRTT 1xRTT EVDO rA HSPA 14.4
Features 
Flashlight - Yes - Yes -
GPS / Location Yes Yes Yes Yes n/a
Ruggedized - - - Yes -
Water-Resistant - - - Yes -
Accessibility
Adjustable Text Size - - - Yes n/a
Hearing Aid Compatible - - Yes
M3 (mostly compatible)
Yes
M4, T4 (very tele-coil compatible)
Yes
M3 (mostly compatible)
Multiple Languages Yes - Yes Yes n/a
TTY/TDD (Digital) - Yes Yes Yes -
Alerts
Extra Display - Yes - Yes -
Connectivity
Bluetooth - - Yes Yes Yes
Mobile Hotspot - - - - n/a
USB - Yes Yes Yes Yes
Wi-Fi - - - - Yes
4 (802.11 b,g,n)
Contacts
Picture ID Yes Yes Yes Yes n/a
Ringer ID Yes Yes Yes Yes n/a
Voice Dialing Yes Yes Yes Yes n/a
Customization
Changeable Body Plates - Yes - - -
Custom Graphics Yes Yes Yes Yes n/a
Custom Ringtones Yes Yes Yes Yes n/a
Real-Music Ringers - - - Yes n/a
Data & Network
Data Tethering Yes Yes - Yes n/a
WAP / Web Browser Yes Yes Yes Yes n/a
Input
Predictive Text Entry Yes Yes Yes Yes n/a
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - - Yes - Yes
Touch Screen - - - - Yes
Capacitive
Memory
Memory Card Slot - - Yes Yes Yes
Messaging
Email Client - - - - 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
Headphone Jack (3.5mm) - - - - Yes
Music Player - - Yes Yes n/a
Productivity
Alarm Yes Yes Yes Yes n/a
Calculator Yes Yes Yes Yes n/a
Calendar Yes Yes Yes Yes n/a
To-Do List Yes Yes - Yes n/a
Voice Memo Yes Yes Yes Yes n/a
Software
BREW Yes - Yes Yes n/a
Games Yes Yes Yes Yes n/a
Java (J2ME) - Yes - - n/a
Voice
Call Screening - Yes - - -
Headset Jack (2.5 mm) Yes Yes - - n/a
Push-To-Talk - Yes - - -
Speaker Phone - Yes Yes Yes Yes
  Samsung SCH-A610 Sanyo MM-8300 Samsung Messager R450 Casio Exilim C721 HTC G2
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SCH-A610 Sanyo MM-8300 Samsung Messager R450 Casio Exilim C721 HTC G2

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