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Phone Samsung SGH-E640 Motorola Moto Z2 Force LG K4 / Optimus Zone 3 / Rebel LG AX-490 LG 4NE1
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 5.5" diag.
16 : 9
4.5" diag.
16 : 9
? ?
Display Resolution & Type 176 x 220 pixels
LCD (TFT/TFD)
1440 x 2560 pixels
(~534 ppi)
AMOLED
480 x 854 pixels
(~218 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
?
Display Refresh ? 60 Hz 60 Hz ? ?
Battery 800 mAh 2,730 mAh 1,940 mAh 1,100 mAh ?
Processor ? 2.4 GHz Qualcomm Snapdragon 835 (MSM8998) 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) ? ?
RAM ? 4 GB 1.5 GB ? ?
Storage ? raw hardware 64 GB 16 GB * ? raw hardware ? raw hardware
Main Camera 1 megapixel 12 megapixel 5 megapixel Yes -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture QCIF (176 x 144) 4K UHD 720p HD - -
Front Camera - 5 megapixel 2 megapixel - -
Weight 3.17 oz
(90g)
5.04 oz
(143g)
3.99 oz
(113g)
3.79 oz
(107g)
3.7 oz
(105g)
Dimensions 3.37" x 1.78" x 0.93"
(86 x 45 x 23.6 mm)
6.13" x 2.99" x 0.24"
(156 x 76 x 6.1 mm)
5.19" x 2.62" x 0.35"
(132 x 67 x 8.9 mm)
3.74" x 1.92" x 1"
(95 x 49 x 25.4 mm)
4.41" x 1.73" x 0.75"
(112 x 44 x 19.1 mm)
Form Factor Clamshell Slab Slab Clamshell Flip
Platform / OS (proprietary) Android Android (proprietary) (proprietary)
Network Bands

GSM: 900, 1800, 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

*

4G LTE: 2, 4, 5, 13

WCDMA: 1, 2, 5

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

*

CDMA: 850, 1900

AMPS: 850

CDMA: 1900

AMPS: 850

Data Technology GPRS LTE (Cat 16) LTE (Cat 3) 1xRTT -
Features 
Barometer - Yes - - -
Fingerprint Reader - Yes
stand-alone
- - -
Flashlight - Yes Yes - -
GPS / Location - n/a n/a Yes -
VR-ready - Yes - - -
Water-Resistant - Yes - - -
Accessibility
Adjustable Text Size - n/a n/a - -
Hearing Aid Compatible - Yes Yes Yes -
Multiple Languages Yes n/a n/a Yes Yes
TTY/TDD (Digital) - Yes Yes Yes -
Alerts
Extra Display Yes - - Yes -
Connectivity
Bluetooth Yes Yes Yes Yes -
Mobile Hotspot - n/a n/a - -
NFC - Yes - - -
USB Yes Yes
USB Type C
Yes
Micro-USB
Yes -
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 Yes
Voice Dialing - n/a n/a Yes Yes
Customization
Changeable Body Plates - - - - Yes
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 - n/a n/a Yes Yes
Dual-SIM - Yes * - - -
WAP / Web Browser Yes n/a n/a Yes Yes
Input
Predictive Text Entry Yes n/a 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
Email Client Yes n/a n/a - -
EMS / Picture Messaging Yes n/a n/a - -
Instant Messaging - n/a n/a - -
MMS Yes n/a n/a Yes -
Text Messaging Templates Yes n/a n/a Yes -
Music
Headphone Jack (3.5mm) - - Yes - -
Music Player Yes n/a n/a - -
Stereo Speakers - - - Yes -
Photo & Video
Miracast - - Yes - -
Power
Fast Charging - Yes - - -
Productivity
Alarm Yes n/a n/a Yes -
Calculator Yes n/a n/a Yes Yes
Calendar Yes n/a n/a Yes Yes
To-Do List Yes n/a n/a - -
Voice Memo Yes n/a n/a Yes Yes
Software
BREW - n/a n/a Yes -
Games Yes n/a n/a Yes Yes
Java (J2ME) Yes n/a n/a - -
Voice
HD Voice - Yes Yes * - -
Headset Jack (2.5 mm) - n/a n/a Yes Yes
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  Samsung SGH-E640 Motorola Moto Z2 Force LG K4 / Optimus Zone 3 / Rebel LG AX-490 LG 4NE1
  X > < X > < X > < X > < X

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

 
Phone Samsung SGH-E640 Motorola Moto Z2 Force LG K4 / Optimus Zone 3 / Rebel LG AX-490 LG 4NE1

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