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Phone LG AX-490 Samsung PM-A840 AT&T Vista Samsung SCH-A990
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? 5.5" diag.
18 : 9
?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (STN)
720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ?
Battery 1,100 mAh ? 2,450 mAh 1,000 mAh
Processor ? ? 2 GHz MediaTek Helio A22 (MT6761V) ?
RAM ? ? 3 GB ?
Storage ? raw hardware ? raw hardware 32 GB ? raw hardware
Main Camera Yes Yes 8 megapixel 3 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - - 1080p HD ?
Front Camera - - 5 megapixel -
Weight 3.79 oz
(107g)
3.28 oz
(93g)
5.51 oz
(156g)
4.4 oz
(125g)
Dimensions 3.74" x 1.92" x 1"
(95 x 49 x 25.4 mm)
3.54" x 1.85" x 0.94"
(90 x 47 x 23.9 mm)
5.88" x 2.82" x 0.35"
(149 x 72 x 8.9 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
Form Factor Clamshell Clamshell Slab Clamshell
Platform / OS (proprietary) (proprietary) Android (proprietary)
Network Bands

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

AMPS: 850

4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30

WCDMA: 1, 2, 4, 5, 8

CDMA: 850, 1900

Data Technology 1xRTT 1xRTT LTE (Cat 4) EVDO r0
Features 
Flashlight - - Yes Yes
GPS / Location Yes Yes n/a Yes
Accessibility
Hearing Aid Compatible Yes
M3 (mostly compatible)
Yes
M3 (mostly compatible)
Yes
M4, T4 (very tele-coil compatible)
Yes
M3 (mostly compatible)
Multiple Languages Yes Yes n/a Yes
TTY/TDD (Digital) Yes Yes - Yes
Alerts
Extra Display Yes Yes - Yes
Connectivity
Bluetooth Yes - Yes Yes
USB Yes - Yes
USB Type C
Yes
Wi-Fi - - Yes -
Contacts
Picture ID Yes Yes n/a Yes
Ringer ID Yes Yes n/a Yes
Voice Dialing Yes Yes n/a Yes
Customization
Custom Graphics Yes Yes n/a Yes
Custom Ringtones Yes Yes n/a Yes
Real-Music Ringers Yes - n/a Yes
Data & Network
Data Tethering Yes - n/a Yes
WAP / Web Browser Yes Yes n/a Yes
Input
Predictive Text Entry - Yes n/a Yes
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware Yes - - -
Touch Screen - - Yes
Capacitive
-
Memory
Memory Card Slot - - Yes Yes
Messaging
EMS / Picture Messaging - - n/a Yes
MMS Yes - n/a Yes
Text Messaging Templates Yes Yes n/a Yes
Music
Headphone Jack (3.5mm) - - Yes -
Music Player - - n/a Yes
Stereo Speakers Yes - - Yes
Photo & Video
TV Output - - - 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 -
Voice Memo Yes Yes n/a Yes
Software
BREW Yes - n/a Yes
Games Yes Yes n/a Yes
Java (J2ME) - Yes n/a -
Voice
HD Voice - - Yes -
Headset Jack (2.5 mm) Yes Yes n/a -
Speaker Phone Yes Yes Yes Yes
  LG AX-490 Samsung PM-A840 AT&T Vista Samsung SCH-A990
  X > < X > < X > < X

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

 
Phone LG AX-490 Samsung PM-A840 AT&T Vista Samsung SCH-A990

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