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Phone Casio G'zOne Rock Samsung Galaxy S9+ LG K20 / Harmony / Grace Samsung SGH-A157 Samsung SCH-A570
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 2.1" diag.
4 : 3
6.2" diag.
18.5 : 9
5.3" diag.
16 : 9
1.8" diag.
4 : 3
?
Display Resolution & Type 240 x 320 pixels
(~190 ppi)
LCD (TFT/TFD)
1440 x 2960 pixels
(~531 ppi)
AMOLED
720 x 1280 pixels
(~277 ppi)
LCD (TFT/TFD)
128 x 160 pixels
(~116 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (STN)
Display Refresh ? 60 Hz 60 Hz ? ?
Battery 1,150 mAh 3,500 mAh 2,800 mAh 800 mAh ?
Processor ? 2.8 GHz Qualcomm Snapdragon 845 1.4 GHz Qualcomm Snapdragon 425 (MSM8917) ? ?
RAM ? 6 GB 1.5 GB ? ?
Storage ? raw hardware 64 GB 16 GB 256 MB ? raw hardware
Main Camera 2 megapixel 12 megapixel 8 megapixel - -
Wide Camera - - - - -
Tele Camera - 12 megapixel - - -
Video Capture ? 4K UHD 1080p HD - -
Front Camera - 8 megapixel 5 megapixel - -
Weight 4.4 oz
(125g)
6.67 oz
(189g)
5 oz
(142g)
2.99 oz
(85g)
3.6 oz
(102g)
Dimensions 4.1" x 2" x 0.9"
(104 x 51 x 22.9 mm)
6.22" x 2.91" x 0.33"
(158 x 74 x 8.5 mm)
5.9" x 3" x 0.3"
(150 x 76 x 7.6 mm)
3.83" x 1.84" x 0.65"
(97 x 47 x 16.5 mm)
3.3" x 1.8" x 0.9"
(84 x 46 x 22.9 mm)
Form Factor Clamshell Slab Slab Clamshell Clamshell
Platform / OS (proprietary) Android Android (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 66, 71

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

*

4G LTE: 2, 4, 5, 12

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

Data Technology EVDO rA LTE (Cat 18) LTE (Cat 4) ? 1xRTT
Features 
Barometer - Yes - - -
Fingerprint Reader - Yes
stand-alone
- - -
Flashlight Yes Yes Yes - -
GPS / Location Yes n/a n/a Yes Yes
Ruggedized Yes - - - -
VR-ready - Yes - - -
Water-Resistant Yes Yes
IPX8 (SCUBA)
- - -
Accessibility
Adjustable Text Size - n/a n/a Yes -
Hearing Aid Compatible Yes Yes Yes Yes -
Multiple Languages Yes n/a n/a Yes Yes
TTY/TDD (Digital) Yes Yes Yes Yes Yes
Alerts
Extra Display Yes - - - Yes
Ringer Profiles - - - Yes -
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
-
-
MirrorLink - Yes - - -
NFC - Yes Yes * - -
USB Yes Yes
USB Type C
Yes
Micro-USB
Yes
Micro-USB
-
Wi-Fi - Yes
5 (802.11 a,ac,b,g,n)
Yes
4 (802.11 b,g,n)
- -
Contacts
Picture ID Yes n/a n/a Yes -
Ringer ID Yes n/a n/a Yes -
Voice Dialing Yes n/a n/a - Yes
Customization
Custom Graphics Yes n/a n/a Yes Yes
Custom Ringtones Yes n/a n/a Yes Yes
Real-Music Ringers Yes n/a n/a Yes -
Data & Network
Data Tethering Yes n/a n/a - -
WAP / Web Browser Yes n/a n/a Yes Yes
Input
Predictive Text Entry Yes n/a n/a Yes Yes
Side Keys Yes Yes Yes - Yes
Touch Screen - Yes Yes - -
Memory
Memory Card Slot Yes Yes Yes - -
Messaging
Email Client Yes n/a n/a - -
EMS / Picture Messaging - n/a n/a - Yes
Instant Messaging Yes n/a n/a - -
MMS Yes n/a n/a Yes -
Text Messaging Templates Yes n/a n/a Yes Yes
Music
FM Radio - Yes * Yes - -
Headphone Jack (3.5mm) - Yes Yes - -
Music Player Yes n/a n/a - -
Stereo Speakers - Yes - - -
Photo & Video
TV Output - Yes - - -
Power
Fast Charging - Yes - - -
Wireless Charging - Yes - - -
Productivity
Alarm Yes n/a n/a Yes Yes
Calculator Yes n/a n/a Yes Yes
Calendar Yes n/a n/a Yes Yes
To-Do List - n/a n/a Yes Yes
Voice Memo Yes n/a n/a Yes Yes
Software
BREW Yes n/a n/a - Yes
Games Yes n/a n/a - Yes
Voice
HD Voice - Yes Yes - -
Headset Jack (2.5 mm) Yes n/a n/a - Yes
Push-To-Talk Yes - - - -
Speaker Phone Yes Yes Yes Yes -
  * Some versions only
  Casio G'zOne Rock Samsung Galaxy S9+ LG K20 / Harmony / Grace Samsung SGH-A157 Samsung SCH-A570
  X > < X > < X > < X > < X

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

 
Phone Casio G'zOne Rock Samsung Galaxy S9+ LG K20 / Harmony / Grace Samsung SGH-A157 Samsung SCH-A570

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