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Phone Siemens A56 / A56i Samsung SCH-A990 HTC Droid Eris Samsung M520 ZTE Prelude / Avail 2
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? 3.2" diag.
5 : 3
2.1" diag.
4 : 3
3.5" diag.
5 : 3
Display Resolution & Type 101 x 64 pixels 240 x 320 pixels
LCD (TFT/TFD)
320 x 480 pixels
(~180 ppi)
LCD (TFT/TFD)
176 x 220 pixels
(~134 ppi)
LCD (TFT/TFD)
320 x 480 pixels
(~165 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ? 60 Hz
Battery 700 mAh 1,000 mAh 1,300 mAh ? 1,500 mAh
Processor ? ? 528 MHz MSM7600 ? 1 GHz Qualcomm Snapdragon MSM7225A
RAM ? ? ? ? 512 MB
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware 4 GB
Main Camera - 3 megapixel 5 megapixel 1 megapixel 2 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - ? CIF (352 x 288) ? VGA (640 x 480)
Front Camera - - - - -
Weight 3 oz
(85g)
4.4 oz
(125g)
4.43 oz
(126g)
2.75 oz
(78g)
4.4 oz
(125g)
Dimensions 4" x 1.7" x 0.8"
(102 x 43 x 20.3 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
4.45" x 2.19" x 0.52"
(113 x 55 x 13.2 mm)
4.01" x 2.04" x 0.5"
(102 x 52 x 12.7 mm)
4.6" x 2.44" x 0.45"
(117 x 62 x 11.4 mm)
Form Factor Slab Clamshell Slab Slide Slab
Platform / OS (proprietary) (proprietary) Android (proprietary) Android
Network Bands

GSM: 850, 1900

CDMA: 850, 1900

CDMA: 850, 1900

CDMA: 850, 1900

WCDMA: 2, 5

GSM: 850, 1900

Data Technology - EVDO r0 EVDO rA EVDO r0 HSPA 7.2
Features 
Flashlight - Yes - - -
GPS / Location Yes Yes n/a Yes n/a
Accessibility
Adjustable Text Size - - n/a - n/a
Hearing Aid Compatible - Yes Yes Yes Yes
Multiple Languages - Yes n/a Yes n/a
TTY/TDD (Digital) Yes Yes Yes Yes Yes
Alerts
Extra Display - Yes - - -
Ringer Profiles Yes - - - -
Connectivity
Bluetooth - Yes Yes Yes Yes
USB - Yes Yes
Mini-USB
Yes Yes
Wi-Fi - - Yes
802.11 b,g
- Yes
4 (802.11 b,g,n)
Contacts
Picture ID Yes Yes n/a Yes n/a
Ringer ID Yes Yes n/a Yes n/a
Voice Dialing - Yes n/a Yes n/a
Customization
Changeable Body Plates Yes - - - -
Custom Graphics Yes Yes n/a Yes n/a
Custom Ringtones Yes Yes n/a Yes n/a
Real-Music Ringers - Yes n/a - n/a
Data & Network
Data Tethering - Yes n/a Yes n/a
WAP / Web Browser Yes Yes n/a Yes n/a
Input
Predictive Text Entry Yes Yes n/a Yes n/a
Side Keys - Yes Yes Yes Yes
Touch Screen - - Yes - Yes
Memory
Memory Card Slot - Yes Yes Yes Yes
Messaging
Email Client - - n/a - n/a
EMS / Picture Messaging Yes Yes n/a - n/a
Instant Messaging - - n/a - n/a
MMS - Yes n/a - n/a
Text Messaging Templates - Yes n/a Yes n/a
Music
Headphone Jack (3.5mm) - - Yes - Yes
Music Player - Yes n/a Yes n/a
Stereo Speakers - Yes - - -
Photo & Video
TV Output - Yes - - -
Productivity
Alarm Yes Yes n/a Yes n/a
Calculator Yes Yes n/a Yes n/a
Calendar - Yes n/a Yes n/a
To-Do List - - n/a Yes n/a
Voice Memo - Yes n/a Yes n/a
Software
BREW - Yes n/a - n/a
Games Yes Yes n/a Yes n/a
Java (J2ME) - - n/a Yes n/a
Voice
Speaker Phone - Yes Yes Yes Yes
  Siemens A56 / A56i Samsung SCH-A990 HTC Droid Eris Samsung M520 ZTE Prelude / Avail 2
  X > < X > < X > < X > < X

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

 
Phone Siemens A56 / A56i Samsung SCH-A990 HTC Droid Eris Samsung M520 ZTE Prelude / Avail 2

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