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Phone Samsung SCH-A990 Samsung SGH-X640 LG PM-225 Amazon Fire
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? ? 4.7" diag.
16 : 9
Display Resolution & Type 240 x 320 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (STN)
720 x 1280 pixels
(~312 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery 1,000 mAh 800 mAh 1,000 mAh 2,400 mAh
Processor ? ? ? 2.2 GHz Qualcomm Snapdragon 800
RAM ? ? ? 2 GB
Storage ? raw hardware ? raw hardware ? raw hardware 32 GB *
Main Camera 3 megapixel Yes Yes 13 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? - - 1080p HD
Front Camera - - - 2 megapixel
Weight 4.4 oz
(125g)
3 oz
(85g)
3.35 oz
(95g)
5.64 oz
(160g)
Dimensions 3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.53" x 1.76" x 0.93"
(90 x 45 x 23.6 mm)
5.5" x 2.6" x 0.35"
(140 x 66 x 8.9 mm)
Form Factor Clamshell Clamshell Clamshell Slab
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

GSM: 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

4G LTE: 1, 2, 3, 4, 5, 7, 8, 17

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

Data Technology EVDO r0 GPRS 1xRTT LTE (Cat 4)
Features 
Flashlight Yes - - Yes
GPS / Location Yes - Yes Yes
Accessibility
Hearing Aid Compatible Yes
M3 (mostly compatible)
- - Yes
M4, T4 (very tele-coil compatible)
Multiple Languages Yes Yes Yes Yes
TTY/TDD (Digital) Yes - Yes Yes
Alerts
Extra Display Yes - Yes -
Connectivity
Bluetooth Yes - - Yes
Mobile Hotspot - - - Yes
NFC - - - Yes
USB Yes - Yes Yes
Micro-USB
Wi-Fi - - - Yes
5 (802.11 a,ac,b,g,n)
Contacts
Picture ID Yes Yes Yes Yes
Ringer ID Yes Yes Yes Yes
Voice Dialing Yes - Yes Yes
Customization
Custom Graphics Yes Yes Yes -
Custom Ringtones Yes Yes Yes Yes
Real-Music Ringers Yes - - -
Data & Network
Data Tethering Yes - - Yes
WAP / Web Browser Yes Yes Yes Yes
Input
Predictive Text Entry Yes Yes Yes Yes
Side Keys Yes Yes Yes Yes
Touch Screen - - - Yes
Capacitive
Memory
Memory Card Slot Yes - - -
Messaging
Email Client - - - Yes
EMS / Picture Messaging Yes Yes - -
MMS Yes Yes - Yes
Text Messaging Templates Yes Yes - Yes
Music
Headphone Jack (3.5mm) - - - Yes
Music Player Yes - - Yes
Stereo Speakers Yes - - Yes
Photo & Video
Miracast - - - Yes
TV Output Yes - - Yes
Productivity
Alarm Yes Yes Yes Yes
Calculator Yes Yes Yes Yes
Calendar Yes Yes Yes Yes
To-Do List - Yes - -
Voice Memo Yes Yes Yes Yes
Software
BREW Yes - - -
Games Yes Yes Yes Yes
Java (J2ME) - Yes Yes -
Voice
HD Voice - - - Yes
Headset Jack (2.5 mm) - Yes Yes -
Speaker Phone Yes Yes Yes Yes
  Samsung SCH-A990 Samsung SGH-X640 LG PM-225 Amazon Fire
  X > < X > < X > < X

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

 
Phone Samsung SCH-A990 Samsung SGH-X640 LG PM-225 Amazon Fire

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