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Phone Samsung SCH-A990 Samsung SPH/SCH-N300 LG K40 / Harmony 3 Pantech Duo C810
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? 5.7" diag.
18 : 9
2.2" diag.
4 : 3
Display Resolution & Type 240 x 320 pixels
LCD (TFT/TFD)
128 x 64 pixels 720 x 1440 pixels
(~282 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ?
Battery 1,000 mAh ? 3,000 mAh 1,320 mAh
Processor ? ? 1.8 GHz Qualcomm Snapdragon 450 ARM 920t PXA27x
RAM ? ? 2 GB ?
Storage ? raw hardware ? raw hardware 32 GB ? raw hardware
Main Camera 3 megapixel - 13 megapixel 1 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? - 1080p HD QVGA (320 x 240)
Front Camera - - 5 megapixel -
Weight 4.4 oz
(125g)
4.1 oz
(116g)
5.11 oz
(145g)
3.88 oz
(110g)
Dimensions 3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
4.5" x 1.9" x 0.9"
(114 x 48 x 22.9 mm)
6.02" x 2.83" x 0.32"
(153 x 72 x 8.1 mm)
4.01" x 1.97" x 0.78"
(102 x 50 x 19.8 mm)
Form Factor Clamshell Flip Slab Slide
Platform / OS (proprietary) (proprietary) Android Windows Mobile Standard
Network Bands

CDMA: 850, 1900

CDMA: 850, 1900

AMPS: 850

4G LTE: 2, 4, 5, 12, 13, 14, 25, 26, 29, 30, 41, 66, 71

WCDMA: 2, 4, 5

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

*

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

Data Technology EVDO r0 - LTE (Cat 6) HSDPA 1.8
Features 
Fingerprint Reader - - Yes
stand-alone
-
Flashlight Yes - Yes -
GPS / Location Yes Yes n/a n/a
Accessibility
Hearing Aid Compatible Yes
M3 (mostly compatible)
- Yes
M3, T3 (mostly tele-coil compatible)
-
Multiple Languages Yes - n/a n/a
TTY/TDD (Digital) Yes - Yes -
Alerts
Extra Display Yes - - -
Ringer Profiles - - - Yes
Connectivity
Bluetooth Yes - Yes Yes
NFC - - Yes * -
USB Yes - Yes
Micro-USB
Yes
Wi-Fi - - Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID Yes - n/a n/a
Ringer ID Yes - n/a n/a
Voice Dialing Yes Yes n/a n/a
Customization
Custom Graphics Yes - n/a n/a
Custom Ringtones Yes - n/a n/a
Real-Music Ringers Yes - n/a n/a
Data & Network
Data Tethering Yes Yes n/a n/a
WAP / Web Browser Yes Yes n/a n/a
Input
Predictive Text Entry Yes Yes n/a n/a
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
EMS / Picture Messaging Yes - n/a n/a
Instant Messaging - - n/a n/a
MMS Yes - n/a n/a
Text Messaging Templates Yes - n/a n/a
Music
FM Radio - - Yes -
Headphone Jack (3.5mm) - - Yes -
Music Player Yes - n/a n/a
Stereo Speakers Yes - - -
Photo & Video
DLNA - - Yes -
TV Output Yes - - -
Productivity
Alarm Yes Yes n/a n/a
Calculator Yes Yes n/a n/a
Calendar Yes Yes n/a n/a
To-Do List - Yes n/a n/a
Voice Memo Yes - n/a n/a
Software
BREW Yes - n/a n/a
Games Yes Yes n/a n/a
Voice
HD Voice - - Yes -
Headset Jack (2.5 mm) - Yes n/a n/a
Speaker Phone Yes - Yes Yes
  * Some versions only
  Samsung SCH-A990 Samsung SPH/SCH-N300 LG K40 / Harmony 3 Pantech Duo C810
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SCH-A990 Samsung SPH/SCH-N300 LG K40 / Harmony 3 Pantech Duo C810

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