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Phone Samsung M520 Audiovox PPC 5050 (HTC Falcon) LG AX-490 Samsung SGH-X640 Samsung SGH-A157
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 2.1" diag.
4 : 3
? ? ? 1.8" diag.
4 : 3
Display Resolution & Type 176 x 220 pixels
(~134 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
128 x 160 pixels
(~116 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? ? ?
Battery ? 1,500 mAh 1,100 mAh 800 mAh 800 mAh
Processor ? ? ? ? ?
RAM ? ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware 256 MB
Main Camera 1 megapixel - Yes Yes -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture ? - - - -
Front Camera - - - - -
Weight 2.75 oz
(78g)
6.2 oz
(176g)
3.79 oz
(107g)
3 oz
(85g)
2.99 oz
(85g)
Dimensions 4.01" x 2.04" x 0.5"
(102 x 52 x 12.7 mm)
5.1" x 2.09" x 0.7"
(130 x 53 x 17.8 mm)
3.74" x 1.92" x 1"
(95 x 49 x 25.4 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.83" x 1.84" x 0.65"
(97 x 47 x 16.5 mm)
Form Factor Slide Slab Clamshell Clamshell Clamshell
Platform / OS (proprietary) Windows Mobile Professional (proprietary) (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

CDMA: 850, 1900

CDMA: 850, 1900

AMPS: 850

GSM: 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

Data Technology EVDO r0 1xRTT 1xRTT GPRS ?
Features 
GPS / Location Yes n/a Yes - Yes
Accessibility
Adjustable Text Size - n/a - - Yes
Hearing Aid Compatible Yes - Yes - Yes
Multiple Languages Yes n/a Yes Yes Yes
TTY/TDD (Digital) Yes - Yes - Yes
Alerts
Extra Display - - Yes - -
Ringer Profiles - - - - Yes
Connectivity
Bluetooth Yes - Yes - -
Infrared (IR) - Yes - - -
USB Yes - Yes - Yes
Micro-USB
Contacts
Picture ID Yes n/a Yes Yes Yes
Ringer ID Yes n/a Yes Yes Yes
Voice Dialing Yes n/a Yes - -
Customization
Custom Graphics Yes n/a Yes Yes Yes
Custom Ringtones Yes n/a Yes Yes Yes
Real-Music Ringers - n/a Yes - Yes
Data & Network
Data Tethering Yes n/a Yes - -
WAP / Web Browser Yes n/a Yes Yes Yes
Input
Predictive Text Entry Yes n/a - Yes Yes
Side Keys Yes Yes Yes Yes -
Text Keyboard, Hardware - - Yes - -
Touch Screen - Yes - - -
Memory
Memory Card Slot Yes Yes - - -
Messaging
Email Client - n/a - - -
EMS / Picture Messaging - n/a - Yes -
MMS - n/a Yes Yes Yes
Text Messaging Templates Yes n/a Yes Yes Yes
Music
Music Player Yes n/a - - -
Stereo Speakers - - Yes - -
Productivity
Alarm Yes n/a Yes Yes Yes
Calculator Yes n/a Yes Yes Yes
Calendar Yes n/a Yes Yes Yes
To-Do List Yes n/a - Yes Yes
Voice Memo Yes n/a Yes Yes Yes
Software
BREW - n/a Yes - -
Games Yes n/a Yes Yes -
Java (J2ME) Yes n/a - Yes -
Voice
Headset Jack (2.5 mm) - n/a Yes Yes -
Speaker Phone Yes Yes Yes Yes Yes
  Samsung M520 Audiovox PPC 5050 (HTC Falcon) LG AX-490 Samsung SGH-X640 Samsung SGH-A157
  X > < X > < X > < X > < X

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

 
Phone Samsung M520 Audiovox PPC 5050 (HTC Falcon) LG AX-490 Samsung SGH-X640 Samsung SGH-A157

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