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Phone Audiovox CDM-8150X Samsung Messager R450 Samsung SGH-D520 Samsung Sidekick 4G
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 2.1" diag.
4 : 3
? 3.5" diag.
5 : 3
Display Resolution & Type ? 176 x 220 pixels
(~134 ppi)
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
480 x 800 pixels
(~267 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? 60 Hz
Battery ? 960 mAh 800 mAh ?
Processor ? ? ? 1 GHz Samsung Hummingbird Cortex A8
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera - 1 megapixel 1 megapixel 3 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - - CIF (352 x 288) WVGA / 480p
Front Camera - - - Yes
Weight 3.88 oz
(110g)
4.58 oz
(130g)
3.32 oz
(94g)
5.7 oz
(162g)
Dimensions 4.88" x 1.89" x 0.71"
(124 x 48 x 18 mm)
4.4" x 2" x 0.7"
(112 x 51 x 17.8 mm)
3.98" x 1.81" x 0.63"
(101 x 46 x 16 mm)
5" x 2.42" x 0.6"
(127 x 61 x 15.2 mm)
Form Factor Slab Slab Slide Slide
Platform / OS (proprietary) (proprietary) (proprietary) Android
Network Bands

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1700, 1900

GSM: 900, 1800, 1900

WCDMA: 1, 4

GSM: 850, 900, 1800, 1900

Data Technology 1xRTT 1xRTT GPRS HSPA+ 21
Features 
GPS / Location - Yes - n/a
Accessibility
Hearing Aid Compatible - Yes - Yes
Multiple Languages Yes Yes Yes n/a
TTY/TDD (Digital) - Yes - Yes
Connectivity
Bluetooth - Yes Yes Yes
Mobile Hotspot - - - n/a
USB - Yes - Yes
Micro-USB
Wi-Fi - - - Yes
4 (802.11 b,g,n)
Contacts
Picture ID - Yes Yes n/a
Ringer ID - Yes Yes n/a
Voice Dialing Yes Yes - n/a
Customization
Custom Graphics - Yes Yes n/a
Custom Ringtones Yes Yes Yes n/a
Real-Music Ringers - - - n/a
Data & Network
Data Tethering - - Yes n/a
External Antenna Jack - - 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
Text Keyboard, Hardware - Yes - Yes
Touch Screen - - - Yes
Memory
Memory Card Slot - Yes - Yes
Messaging
Email Client - - Yes n/a
Instant Messaging - - - n/a
MMS - Yes Yes n/a
Text Messaging Templates - Yes Yes n/a
Music
Headphone Jack (3.5mm) - - - Yes
Music Player - Yes - n/a
Photo & Video
DLNA - - - Yes
Productivity
Alarm - Yes Yes n/a
Calculator Yes Yes Yes n/a
Calendar Yes Yes Yes n/a
To-Do List - - 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
Headset Jack (2.5 mm) Yes - - n/a
Speaker Phone - Yes Yes Yes
  Audiovox CDM-8150X Samsung Messager R450 Samsung SGH-D520 Samsung Sidekick 4G
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Audiovox CDM-8150X Samsung Messager R450 Samsung SGH-D520 Samsung Sidekick 4G

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