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Phone Ericsson R520 Samsung SCH-A990 AT&T Maestro 3 BlackBerry Storm2 9550 Samsung SPH/SCH-N300
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? 6.5" diag.
20 : 9
3.3" diag.
4 : 3
?
Display Resolution & Type ? 240 x 320 pixels
LCD (TFT/TFD)
720 x 1600 pixels
(~270 ppi)
LCD (TFT/TFD)
360 x 480 pixels
(~185 ppi)
LCD (TFT/TFD)
128 x 64 pixels
Display Refresh ? ? 60 Hz ? ?
Battery ? 1,000 mAh 3,900 mAh 1,400 mAh ?
Processor ? ? 2 GHz MediaTek Helio A22 (MT6761) ? ?
RAM ? ? 3 GB ? ?
Storage ? raw hardware ? raw hardware 32 GB ? raw hardware ? raw hardware
Main Camera - 3 megapixel 13 megapixel 3 megapixel -
Wide Camera - - 5 megapixel - -
Tele Camera - - - - -
Video Capture - ? 1080p HD ? -
Front Camera - - 5 megapixel - -
Weight 4.23 oz
(120g)
4.4 oz
(125g)
6.24 oz
(177g)
5.64 oz
(160g)
4.1 oz
(116g)
Dimensions 5.12" x 1.97" x 0.63"
(130 x 50 x 16 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
6.58" x 3.03" x 0.33"
(167 x 77 x 8.4 mm)
4.43" x 2.45" x 0.55"
(113 x 62 x 14 mm)
4.5" x 1.9" x 0.9"
(114 x 48 x 22.9 mm)
Form Factor Slab Clamshell Slab Slab Flip
Platform / OS (proprietary) (proprietary) Android BlackBerry OS (proprietary)
Network Bands

GSM: 900, 1800, 1900

CDMA: 850, 1900

4G LTE: 2, 4, 5, 12, 14, 30

WCDMA: 1

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

Data Technology GPRS EVDO r0 LTE (Cat 4) EVDO rA -
Features 
Barometer - - Yes - -
Fingerprint Reader - - Yes
stand-alone
- -
Flashlight - Yes Yes - -
GPS / Location - Yes n/a n/a Yes
Accessibility
Adjustable Text Size - - n/a n/a -
Hearing Aid Compatible - Yes
M3 (mostly compatible)
Yes
M4, T4 (very tele-coil compatible)
Yes
M3 (mostly compatible)
-
Multiple Languages Yes Yes n/a n/a -
TTY/TDD (Digital) - Yes - Yes -
Alerts
Extra Display - Yes - - -
Ringer Profiles Yes - - Yes -
Connectivity
Bluetooth Yes Yes Yes Yes -
Infrared (IR) Yes - - - -
USB - Yes Yes
USB Type C
Yes -
Wi-Fi - - Yes
5 (802.11 a,ac,b,g,n)
Yes
802.11 b,g
-
Contacts
Picture ID - Yes n/a n/a -
Ringer ID - Yes n/a n/a -
Voice Dialing Yes Yes n/a n/a Yes
Customization
Custom Graphics - Yes n/a n/a -
Custom Ringtones Yes Yes n/a n/a -
Real-Music Ringers - Yes n/a n/a -
Data & Network
Data Tethering Yes Yes n/a n/a Yes
WAP / Web Browser Yes Yes n/a n/a Yes
Input
Predictive Text Entry Yes Yes n/a n/a Yes
Side Keys Yes Yes Yes Yes Yes
Touch Screen - - Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot - Yes Yes Yes -
Messaging
Email Client - - n/a n/a -
EMS / Picture Messaging - Yes n/a n/a -
Instant Messaging - - n/a n/a -
MMS - Yes n/a n/a -
Text Messaging Templates Yes Yes n/a n/a -
Music
Headphone Jack (3.5mm) - - Yes Yes -
Music Player - Yes n/a n/a -
Stereo Speakers - Yes - - -
Photo & Video
TV Output - Yes - - -
Productivity
Alarm Yes Yes n/a n/a Yes
Calculator Yes Yes n/a n/a Yes
Calendar Yes Yes n/a n/a Yes
To-Do List - - n/a n/a Yes
Voice Memo Yes Yes n/a n/a -
Software
BREW - Yes n/a n/a -
Games Yes Yes n/a n/a Yes
Java (J2ME) - - n/a n/a -
Voice
HD Voice - - Yes - -
Headset Jack (2.5 mm) - - n/a n/a Yes
Speaker Phone Yes Yes Yes Yes -
  Ericsson R520 Samsung SCH-A990 AT&T Maestro 3 BlackBerry Storm2 9550 Samsung SPH/SCH-N300
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Ericsson R520 Samsung SCH-A990 AT&T Maestro 3 BlackBerry Storm2 9550 Samsung SPH/SCH-N300

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