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Phone Samsung SGH-X640 Samsung Galaxy S6 (GSM) Casio G'zOne Boulder Motorola Moto Z2 Force LG F9100
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 5.1" diag.
16 : 9
2" diag.
4 : 3
5.5" diag.
16 : 9
?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
1440 x 2560 pixels
(~576 ppi)
AMOLED
240 x 320 pixels
(~200 ppi)
LCD (TFT/TFD)
1440 x 2560 pixels
(~534 ppi)
AMOLED
128 x 160 pixels
LCD (STN)
Display Refresh ? 60 Hz ? 60 Hz ?
Battery 800 mAh 2,550 mAh 810 mAh 2,730 mAh 1,030 mAh
Processor ? 2.1 GHz Samsung Exynos 7420 ? 2.4 GHz Qualcomm Snapdragon 835 (MSM8998) ?
RAM ? 3 GB ? 4 GB ?
Storage ? raw hardware 32 GB * ? raw hardware 64 GB ? raw hardware
Main Camera Yes 16 megapixel 1 megapixel 12 megapixel -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - 4K UHD ? 4K UHD -
Front Camera - 5 megapixel - 5 megapixel -
Weight 3 oz
(85g)
4.87 oz
(138g)
4.9 oz
(139g)
5.04 oz
(143g)
4.41 oz
(125g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
5.65" x 2.78" x 0.27"
(143 x 71 x 6.8 mm)
3.9" x 2" x 0.9"
(99 x 51 x 22.9 mm)
6.13" x 2.99" x 0.24"
(156 x 76 x 6.1 mm)
4.13" x 1.97" x 0.96"
(105 x 50 x 24.4 mm)
Form Factor Clamshell Slab Clamshell Slab Slide
Platform / OS (proprietary) Android (proprietary) Android (proprietary)
Network Bands

GSM: 900, 1800, 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

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 41, 66

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

*

GSM: 850, 1900

Data Technology GPRS LTE (Cat 6) EVDO rA LTE (Cat 16) GPRS
Features 
Barometer - - - Yes -
Fingerprint Reader - Yes - Yes
stand-alone
-
Flashlight - Yes Yes Yes -
GPS / Location - n/a Yes n/a -
Ruggedized - - Yes - -
VR-ready - Yes - Yes -
Water-Resistant - - Yes Yes -
Accessibility
Hearing Aid Compatible - Yes Yes Yes -
Multiple Languages Yes n/a Yes n/a Yes
TTY/TDD (Digital) - Yes Yes Yes -
Alerts
Extra Display - - Yes - -
Connectivity
Bluetooth - Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
-
Infrared (IR) - Yes - - -
MirrorLink - Yes - - -
NFC - Yes - Yes -
USB - Yes
Micro-USB
Yes Yes
USB Type C
-
Wi-Fi - Yes
5 (802.11 a,ac,b,g,n)
- Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID Yes n/a Yes n/a -
Ringer ID Yes n/a Yes n/a Yes
Voice Dialing - n/a Yes n/a Yes
Customization
Changeable Body Plates - - Yes - -
Custom Graphics Yes n/a Yes n/a Yes
Custom Ringtones Yes n/a Yes n/a Yes
Data & Network
Data Tethering - n/a Yes n/a -
Dual-SIM - - - Yes * -
WAP / Web Browser Yes n/a Yes n/a Yes
Input
Predictive Text Entry Yes n/a Yes n/a Yes
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - - - - Yes
Touch Screen - Yes - Yes -
Memory
Memory Card Slot - - Yes Yes -
Messaging
EMS / Picture Messaging Yes n/a Yes n/a Yes
Instant Messaging - n/a - n/a Yes
MMS Yes n/a Yes n/a Yes
Text Messaging Templates Yes n/a Yes n/a Yes
Music
Headphone Jack (3.5mm) - Yes - - -
Music Player - n/a Yes n/a -
Photo & Video
DLNA - Yes - - -
Miracast - Yes - - -
TV Output - Yes - - -
Power
Fast Charging - Yes - Yes -
Wireless Charging - Yes - - -
Productivity
Alarm Yes n/a Yes n/a Yes
Calculator Yes n/a Yes n/a Yes
Calendar Yes n/a Yes n/a Yes
To-Do List Yes n/a - n/a -
Voice Memo Yes n/a Yes n/a Yes
Software
BREW - n/a Yes n/a -
Games Yes n/a Yes n/a Yes
Java (J2ME) 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
  Samsung SGH-X640 Samsung Galaxy S6 (GSM) Casio G'zOne Boulder Motorola Moto Z2 Force LG F9100
  X > < X > < X > < X > < X

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

 
Phone Samsung SGH-X640 Samsung Galaxy S6 (GSM) Casio G'zOne Boulder Motorola Moto Z2 Force LG F9100

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