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Phone Samsung SGH-A157 Samsung SGH-P500 Samsung SGH-X820 LG Optimus Zone
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Not yet released Released Released
Specifications 
Display Size 1.8" diag.
4 : 3
? ? 3.2" diag.
4 : 3
Display Resolution & Type 128 x 160 pixels
(~116 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
220 x 176 pixels
LCD (TFT/TFD)
240 x 320 pixels
(~125 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? 60 Hz
Battery 800 mAh 900 mAh 650 mAh 1,540 mAh
Processor ? ? ? 800 MHz Qualcomm Snapdragon S1 MSM7625A
RAM ? ? ? 512 MB
Storage 256 MB ? raw hardware ? raw hardware 4 GB
Main Camera - Yes 2 megapixel 3 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - ? ? VGA (640 x 480)
Front Camera - - - -
Weight 2.99 oz
(85g)
3.28 oz
(93g)
2.33 oz
(66g)
3.88 oz
(110g)
Dimensions 3.83" x 1.84" x 0.65"
(97 x 47 x 16.5 mm)
3.54" x 1.81" x 0.91"
(90 x 46 x 23.1 mm)
4.45" x 1.97" x 0.27"
(113 x 50 x 6.9 mm)
4.04" x 2.42" x 0.47"
(103 x 61 x 11.9 mm)
Form Factor Clamshell Clamshell Slab Slab
Platform / OS (proprietary) (proprietary) (proprietary) Android
Network Bands

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

GSM: 900, 1800, 1900

CDMA: 850, 1900

Data Technology ? GPRS EDGE EVDO rA
Features 
GPS / Location Yes - - n/a
Accessibility
Adjustable Text Size Yes - - n/a
Hearing Aid Compatible Yes - - Yes
Multiple Languages Yes Yes Yes n/a
TTY/TDD (Digital) Yes - - Yes
Alerts
Extra Display - Yes - -
Ringer Profiles Yes - - -
Connectivity
Bluetooth - - Yes Yes
Infrared (IR) - Yes - -
USB Yes
Micro-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 - - - n/a
Customization
Custom Graphics Yes Yes Yes n/a
Custom Ringtones Yes Yes Yes n/a
Real-Music Ringers Yes - Yes n/a
Data & Network
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
Touch Screen - - - Yes
Memory
Memory Card Slot - - - Yes
Messaging
Email Client - - Yes n/a
EMS / Picture Messaging - Yes Yes n/a
Instant Messaging - - - n/a
MMS Yes Yes Yes n/a
Text Messaging Templates Yes Yes Yes n/a
Music
Headphone Jack (3.5mm) - - - Yes
Music Player - - - n/a
Photo & Video
TV Output - - Yes -
Productivity
Alarm Yes Yes Yes n/a
Calculator Yes Yes Yes n/a
Calendar Yes Yes Yes n/a
To-Do List Yes Yes Yes n/a
Voice Memo Yes Yes Yes n/a
Software
Games - Yes Yes n/a
Java (J2ME) - Yes Yes n/a
Voice
Speaker Phone Yes - Yes Yes
  Samsung SGH-A157 Samsung SGH-P500 Samsung SGH-X820 LG Optimus Zone
  X > < X > < X > < X

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

 
Phone Samsung SGH-A157 Samsung SGH-P500 Samsung SGH-X820 LG Optimus Zone

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