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Phone Samsung SCH-A990 HTC G2 Nokia N81 Sony Ericsson Z520 / Z525
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 3.7" diag.
5 : 3
2.4" diag.
4 : 3
?
Display Resolution & Type 240 x 320 pixels
LCD (TFT/TFD)
480 x 800 pixels
(~252 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~167 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? ?
Battery 1,000 mAh 1,300 mAh 1,050 mAh ?
Processor ? 800 MHz Qualcomm S2 MSM7230 369 MHz ARM 11 ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware 8 GB * ? raw hardware
Main Camera 3 megapixel 5 megapixel 2 megapixel Yes
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? 720p HD VGA (640 x 480) ?
Front Camera - - - -
Weight 4.4 oz
(125g)
6.5 oz
(184g)
4.94 oz
(140g)
3.46 oz
(98g)
Dimensions 3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
4.68" x 2.37" x 0.55"
(119 x 60 x 14 mm)
4.02" x 1.97" x 0.7"
(102 x 50 x 17.8 mm)
3.27" x 1.81" x 0.94"
(83 x 46 x 23.9 mm)
Form Factor Clamshell Slab Slide Clamshell
Platform / OS (proprietary) Android S60 (Symbian) (proprietary)
Network Bands

CDMA: 850, 1900

WCDMA: 1, 4

GSM: 850, 900, 1800, 1900

WCDMA: 1

GSM: 850, 900, 1800, 1900

GSM: 850, 900, 1800, 1900

Data Technology EVDO r0 HSPA 14.4 EDGE GPRS
Features 
Flashlight Yes - - -
GPS / Location Yes n/a n/a -
Accessibility
Hearing Aid Compatible Yes
M3 (mostly compatible)
Yes
M3 (mostly compatible)
- -
Multiple Languages Yes n/a n/a Yes
TTY/TDD (Digital) Yes - - Yes
Alerts
Extra Display Yes - - Yes
Ringer Profiles - - Yes Yes
Connectivity
Bluetooth Yes Yes Yes Yes
Infrared (IR) - - - Yes
Mobile Hotspot - n/a n/a -
USB Yes Yes Yes
Micro-USB
Yes
Wi-Fi - Yes
4 (802.11 b,g,n)
Yes
802.11 b,g
-
Contacts
Picture ID Yes n/a n/a Yes
Ringer ID Yes n/a n/a Yes
Voice Dialing Yes n/a n/a Yes
Customization
Changeable Body Plates - - - Yes
Custom Graphics Yes n/a n/a Yes
Custom Ringtones Yes n/a n/a Yes
Real-Music Ringers Yes n/a n/a Yes
Data & Network
Data Tethering Yes n/a n/a Yes
WAP / Web Browser Yes n/a n/a Yes
Input
Predictive Text Entry Yes n/a n/a Yes
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - Yes - -
Touch Screen - Yes
Capacitive
- -
Memory
Memory Card Slot Yes Yes Yes * -
Messaging
Email Client - n/a n/a Yes
EMS / Picture Messaging Yes n/a n/a Yes
Instant Messaging - n/a n/a -
MMS Yes n/a n/a Yes
Text Messaging Templates Yes n/a n/a Yes
Music
FM Radio - - Yes -
Headphone Jack (3.5mm) - Yes Yes -
Music Player Yes n/a n/a -
Stereo Speakers Yes - Yes -
Photo & Video
TV Output Yes - - -
Video Calling - n/a n/a -
Productivity
Alarm Yes n/a n/a Yes
Calculator Yes n/a n/a Yes
Calendar Yes n/a n/a Yes
To-Do List - n/a n/a Yes
Voice Memo Yes n/a n/a Yes
Software
BREW Yes n/a n/a -
Games Yes n/a n/a Yes
Java (J2ME) - n/a n/a Yes
Voice
Push-To-Talk - - Yes * Yes *
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  Samsung SCH-A990 HTC G2 Nokia N81 Sony Ericsson Z520 / Z525
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Phone Samsung SCH-A990 HTC G2 Nokia N81 Sony Ericsson Z520 / Z525

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