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Phone Samsung Messager III / R570 HTC Radar Samsung SGH-X640
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size 2.4" diag.
4 : 3
3.8" diag.
5 : 3
?
Display Resolution & Type 240 x 320 pixels
(~167 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~246 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh ? ? ?
Battery 1,140 mAh 1,520 mAh 800 mAh
Processor ? 1 GHz Qualcomm Snapdragon S2 MSM8255 ?
RAM ? ? ?
Storage ? raw hardware 8 GB ? raw hardware
Main Camera 1 megapixel 5 megapixel Yes
Wide Camera - - -
Tele Camera - - -
Video Capture - 720p HD -
Front Camera - Yes -
Weight 3.7 oz
(105g)
4.83 oz
(137g)
3 oz
(85g)
Dimensions 4.59" x 2.11" x 0.59"
(117 x 53 x 15 mm)
4.7" x 2.4" x 0.43"
(119 x 61 x 10.9 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
Form Factor Slide Slab Clamshell
Platform / OS (proprietary) Windows (proprietary)
Network Bands

CDMA: 850, 1700, 1900

WCDMA: 1, 2, 4

GSM: 850, 900, 1800, 1900

*

GSM: 900, 1800, 1900

Data Technology 1xRTT HSPA 14.4 GPRS
Features 
GPS / Location Yes n/a -
Accessibility
Hearing Aid Compatible Yes
M4, T3 (mostly tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
-
Multiple Languages Yes n/a Yes
TTY/TDD (Digital) Yes Yes -
Connectivity
Bluetooth Yes Yes -
Mobile Hotspot - n/a -
USB Yes Yes
Micro-USB
-
Wi-Fi - Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID Yes n/a Yes
Ringer ID Yes n/a Yes
Voice Dialing Yes n/a -
Customization
Custom Graphics Yes n/a Yes
Custom Ringtones Yes n/a Yes
Real-Music Ringers Yes n/a -
Data & Network
WAP / Web Browser Yes n/a Yes
Input
Predictive Text Entry Yes n/a Yes
Side Keys Yes Yes Yes
Text Keyboard, Hardware Yes - -
Touch Screen - Yes
Capacitive
-
Memory
Memory Card Slot Yes - -
Messaging
Email Client - n/a -
EMS / Picture Messaging - n/a Yes
MMS Yes n/a Yes
Text Messaging Templates Yes n/a Yes
Music
FM Radio - Yes -
Headphone Jack (3.5mm) Yes Yes -
Music Player Yes n/a -
Productivity
Alarm Yes n/a Yes
Calculator Yes n/a Yes
Calendar Yes n/a Yes
To-Do List - n/a Yes
Voice Memo Yes n/a Yes
Software
BREW Yes n/a -
Games Yes n/a Yes
Java (J2ME) - n/a Yes
Voice
Headset Jack (2.5 mm) - n/a Yes
Speaker Phone Yes Yes Yes
  * Some versions only
  Samsung Messager III / R570 HTC Radar Samsung SGH-X640
  X > < X > < X

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

 
Phone Samsung Messager III / R570 HTC Radar Samsung SGH-X640

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