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Phone Casio G'zOne Rock Samsung SCH-A990 Samsung Galaxy J2 / J2 Pure / J2 Dash Samsung SGH-A157
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 2.1" diag.
4 : 3
? 5" diag.
16 : 9
1.8" diag.
4 : 3
Display Resolution & Type 240 x 320 pixels
(~190 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
540 x 960 pixels
(~220 ppi)
LCD (TFT/TFD)
128 x 160 pixels
(~116 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ?
Battery 1,150 mAh 1,000 mAh 2,600 mAh 800 mAh
Processor ? ? 1.4 GHz Samsung Exynos 7570 ?
RAM ? ? 2 GB ?
Storage ? raw hardware ? raw hardware 16 GB 256 MB
Main Camera 2 megapixel 3 megapixel 8 megapixel -
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? ? 1080p HD -
Front Camera - - 5 megapixel -
Weight 4.4 oz
(125g)
4.4 oz
(125g)
5.43 oz
(154g)
2.99 oz
(85g)
Dimensions 4.1" x 2" x 0.9"
(104 x 51 x 22.9 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
5.65" x 2.84" x 0.35"
(144 x 72 x 8.9 mm)
3.83" x 1.84" x 0.65"
(97 x 47 x 16.5 mm)
Form Factor Clamshell Clamshell Slab Clamshell
Platform / OS (proprietary) (proprietary) Android (proprietary)
Network Bands

CDMA: 850, 1900

CDMA: 850, 1900

4G LTE: 2, 3, 4, 5, 7, 12, 14, 66, 71

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

Data Technology EVDO rA EVDO r0 LTE (Cat 4) ?
Features 
Flashlight Yes Yes Yes -
GPS / Location Yes Yes n/a Yes
Ruggedized Yes - - -
Water-Resistant Yes - - -
Accessibility
Adjustable Text Size - - n/a Yes
Hearing Aid Compatible Yes
M4, T4 (very tele-coil compatible)
Yes
M3 (mostly compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4 (very compatible)
Multiple Languages Yes Yes n/a Yes
TTY/TDD (Digital) Yes Yes Yes Yes
Alerts
Extra Display Yes Yes - -
Ringer Profiles - - - Yes
Connectivity
Bluetooth Yes Yes Yes -
USB Yes Yes Yes
Micro-USB
Yes
Micro-USB
Wi-Fi - - Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID Yes Yes n/a Yes
Ringer ID Yes Yes n/a Yes
Voice Dialing Yes Yes n/a -
Customization
Custom Graphics Yes Yes n/a Yes
Custom Ringtones Yes Yes n/a Yes
Real-Music Ringers Yes Yes n/a Yes
Data & Network
Data Tethering Yes Yes n/a -
WAP / Web Browser Yes Yes n/a Yes
Input
Predictive Text Entry Yes Yes n/a Yes
Side Keys Yes Yes Yes -
Touch Screen - - Yes
Capacitive
-
Memory
Memory Card Slot Yes Yes Yes -
Messaging
Email Client Yes - n/a -
EMS / Picture Messaging - Yes n/a -
Instant Messaging Yes - n/a -
MMS Yes Yes n/a Yes
Text Messaging Templates Yes Yes n/a Yes
Music
Headphone Jack (3.5mm) - - Yes -
Music Player Yes Yes n/a -
Stereo Speakers - 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 - - n/a Yes
Voice Memo Yes Yes n/a Yes
Software
BREW Yes Yes n/a -
Games Yes Yes n/a -
Voice
Headset Jack (2.5 mm) Yes - n/a -
Push-To-Talk Yes - - -
Speaker Phone Yes Yes Yes Yes
  Casio G'zOne Rock Samsung SCH-A990 Samsung Galaxy J2 / J2 Pure / J2 Dash Samsung SGH-A157
  X > < X > < X > < X

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Phone Casio G'zOne Rock Samsung SCH-A990 Samsung Galaxy J2 / J2 Pure / J2 Dash Samsung SGH-A157

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