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Phone Samsung SCH-A990 Samsung Galaxy S6 (GSM) Sanyo SCP-3100 Samsung Knack U310
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 5.1" diag.
16 : 9
? 2.2" diag.
4 : 3
Display Resolution & Type 240 x 320 pixels
LCD (TFT/TFD)
1440 x 2560 pixels
(~576 ppi)
AMOLED
128 x 160 pixels
LCD (STN)
176 x 220 pixels
(~128 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? ?
Battery 1,000 mAh 2,550 mAh 1,000 mAh 1,000 mAh
Processor ? 2.1 GHz Samsung Exynos 7420 ? ?
RAM ? 3 GB ? ?
Storage ? raw hardware 32 GB * ? raw hardware ? raw hardware
Main Camera 3 megapixel 16 megapixel Yes -
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? 4K UHD - -
Front Camera - 5 megapixel - -
Weight 4.4 oz
(125g)
4.87 oz
(138g)
3.5 oz
(99g)
3.63 oz
(103g)
Dimensions 3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
5.65" x 2.78" x 0.27"
(143 x 71 x 6.8 mm)
3.31" x 1.83" x 1.01"
(84 x 46 x 25.7 mm)
3.78" x 2.01" x 0.74"
(96 x 51 x 18.8 mm)
Form Factor Clamshell Slab Clamshell Clamshell
Platform / OS (proprietary) Android (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 29, 30

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

*

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

Data Technology EVDO r0 LTE (Cat 6) 1xRTT -
Features 
Fingerprint Reader - Yes - -
Flashlight Yes Yes - -
GPS / Location Yes n/a Yes Yes
VR-ready - Yes - -
Accessibility
Adjustable Text Size - n/a - Yes
Hearing Aid Compatible Yes
M3 (mostly compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4, T4 (very tele-coil compatible)
Yes
M4, T4 (very tele-coil compatible)
Multiple Languages Yes n/a Yes Yes
TTY/TDD (Digital) Yes Yes Yes Yes
Alerts
Extra Display Yes - Yes Yes
Connectivity
Bluetooth Yes Yes - -
Infrared (IR) - Yes - -
MirrorLink - 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 Yes -
Ringer ID Yes n/a Yes -
Voice Dialing Yes n/a Yes Yes
Customization
Custom Graphics Yes n/a Yes -
Custom Ringtones Yes n/a Yes -
Real-Music Ringers Yes n/a - -
Data & Network
Data Tethering Yes n/a - -
External Antenna Jack - n/a Yes -
WAP / Web Browser Yes n/a Yes -
Input
Predictive Text Entry Yes n/a Yes Yes
Side Keys Yes Yes Yes Yes
Touch Screen - Yes
Capacitive
- -
Memory
Memory Card Slot Yes - - -
Messaging
EMS / Picture Messaging Yes n/a - Yes
MMS Yes n/a - -
Text Messaging Templates Yes n/a - -
Music
Headphone Jack (3.5mm) - Yes - -
Music Player Yes n/a - -
Stereo Speakers Yes - - -
Photo & Video
DLNA - Yes - -
Miracast - Yes - -
TV Output Yes Yes - -
Power
Fast Charging - Yes - -
Wireless Charging - Yes - -
Productivity
Alarm Yes n/a Yes Yes
Calculator Yes n/a Yes Yes
Calendar Yes n/a Yes Yes
Voice Memo Yes n/a Yes -
Software
BREW Yes n/a - -
Games Yes n/a Yes -
Java (J2ME) - n/a Yes -
Voice
Call Screening - - Yes -
HD Voice - Yes - -
Headset Jack (2.5 mm) - n/a Yes Yes
Push-To-Talk - - Yes -
Speaker Phone Yes Yes Yes Yes
  Samsung SCH-A990 Samsung Galaxy S6 (GSM) Sanyo SCP-3100 Samsung Knack U310
  X > < X > < X > < X

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

 
Phone Samsung SCH-A990 Samsung Galaxy S6 (GSM) Sanyo SCP-3100 Samsung Knack U310

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