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Phone Pantech Laser Sony Ericsson Z520 / Z525 Huawei Valiant Samsung Impression SGH-A877
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 3.1" diag.
5 : 3
? 4" diag.
5 : 3
3.2" diag.
5 : 3
Display Resolution & Type 480 x 800 pixels
(~301 ppi)
AMOLED
128 x 160 pixels
LCD (TFT/TFD)
480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
240 x 400 pixels
(~146 ppi)
AMOLED
Display Refresh ? ? 60 Hz ?
Battery 1,000 mAh ? 1,750 mAh 1,000 mAh
Processor ? ? 1 GHz Qualcomm Snapdragon S4 Play MSM8225 ?
RAM ? ? 768 MB ?
Storage ? raw hardware ? raw hardware 4 GB ? raw hardware
Main Camera 3 megapixel Yes 3 megapixel 3 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture VGA (640 x 480) ? WVGA / 480p QVGA (320 x 240)
Front Camera - - - -
Weight 4.05 oz
(115g)
3.46 oz
(98g)
4.94 oz
(140g)
5.2 oz
(147g)
Dimensions 4.44" x 2.27" x 0.39"
(113 x 58 x 9.9 mm)
3.27" x 1.81" x 0.94"
(83 x 46 x 23.9 mm)
4.96" x 2.52" x 0.45"
(126 x 64 x 11.4 mm)
4.48" x 2.28" x 0.64"
(114 x 58 x 16.3 mm)
Form Factor Slide Clamshell Slab Slab
Platform / OS (proprietary) (proprietary) Android (proprietary)
Network Bands

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

GSM: 850, 900, 1800, 1900

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

Data Technology HSPA 7.2 GPRS HSPA 7.2 HSDPA 3.6
Features 
GPS / Location Yes - n/a Yes
Accessibility
Adjustable Text Size - - n/a -
Hearing Aid Compatible - - Yes Yes
Multiple Languages Yes Yes n/a Yes
TTY/TDD (Digital) Yes Yes Yes -
Alerts
Extra Display - Yes - -
Ringer Profiles Yes Yes - Yes
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Infrared (IR) - Yes - -
Mobile Hotspot - - n/a -
USB Yes
Micro-USB
Yes Yes
Micro-USB
Yes
Wi-Fi - - Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID Yes Yes n/a Yes
Ringer ID Yes Yes n/a Yes
Voice Dialing - Yes n/a -
Customization
Changeable Body Plates - Yes - -
Custom Graphics Yes Yes n/a Yes
Custom Ringtones Yes Yes n/a Yes
Real-Music Ringers Yes Yes n/a Yes
Data & Network
Data Tethering Yes Yes n/a Yes
WAP / Web Browser Yes Yes n/a Yes
Input
Predictive Text Entry Yes Yes n/a Yes
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware Yes - - Yes
Touch Screen Yes - Yes Yes
Memory
Memory Card Slot Yes - Yes Yes
Messaging
Email Client Yes Yes n/a Yes
EMS / Picture Messaging - Yes n/a -
Instant Messaging Yes - n/a Yes
MMS Yes Yes n/a Yes
Text Messaging Templates Yes Yes n/a Yes
Music
FM Radio - - Yes -
Headphone Jack (3.5mm) - - Yes -
Music Player Yes - n/a Yes
Productivity
Alarm Yes Yes n/a Yes
Calculator Yes Yes n/a Yes
Calendar Yes Yes n/a Yes
To-Do List - Yes n/a Yes
Voice Memo Yes Yes n/a Yes
Software
Games Yes Yes n/a Yes
Java (J2ME) Yes Yes n/a Yes
Voice
Push-To-Talk - Yes * - -
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  Pantech Laser Sony Ericsson Z520 / Z525 Huawei Valiant Samsung Impression SGH-A877
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Phone Pantech Laser Sony Ericsson Z520 / Z525 Huawei Valiant Samsung Impression SGH-A877

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