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Phone LG K4 / Optimus Zone 3 / Rebel Samsung Galaxy Note9 UTStarcom CDM-7126 Samsung SGH-X640
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 4.5" diag.
16 : 9
6.4" diag.
18.5 : 9
1.8" diag.
4 : 3
?
Display Resolution & Type 480 x 854 pixels
(~218 ppi)
LCD (TFT/TFD)
1440 x 2960 pixels
(~514 ppi)
AMOLED
128 x 160 pixels
(~114 ppi)
LCD (STN)
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh 60 Hz 60 Hz ? ?
Battery 1,940 mAh 4,000 mAh 900 mAh 800 mAh
Processor 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) 2.8 GHz Qualcomm Snapdragon 845 Qualcomm QSC6055 ?
RAM 1.5 GB 6 GB * ? ?
Storage 16 GB * 128 GB * ? raw hardware ? raw hardware
Main Camera 5 megapixel 12 megapixel - Yes
Wide Camera - - - -
Tele Camera - 12 megapixel - -
Video Capture 720p HD 4K UHD - -
Front Camera 2 megapixel 8 megapixel - -
Weight 3.99 oz
(113g)
7.09 oz
(201g)
3 oz
(85g)
3 oz
(85g)
Dimensions 5.19" x 2.62" x 0.35"
(132 x 67 x 8.9 mm)
6.37" x 3.01" x 0.35"
(162 x 76 x 8.8 mm)
3.6" x 1.9" x 0.7"
(91 x 48 x 17.8 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
Form Factor Slab Slab Clamshell Clamshell
Platform / OS Android Android (proprietary) (proprietary)
Network Bands

4G LTE: 2, 4, 5, 13

WCDMA: 1, 2, 5

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

*

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 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

*

CDMA: 850, 1700, 1900

GSM: 900, 1800, 1900

Data Technology LTE (Cat 3) LTE (Cat 18) 1xRTT GPRS
Features 
Barometer - Yes - -
Fingerprint Reader - Yes
stand-alone
- -
Flashlight Yes Yes - -
GPS / Location n/a n/a Yes -
VR-ready - Yes - -
Water-Resistant - Yes
IPX8 (SCUBA)
- -
Accessibility
Adjustable Text Size n/a n/a - -
Hearing Aid Compatible Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
Yes
M3, T4 (very tele-coil compatible)
-
Multiple Languages n/a n/a Yes Yes
TTY/TDD (Digital) Yes Yes Yes -
Connectivity
Bluetooth Yes Yes Yes -
MirrorLink - Yes - -
Mobile Hotspot n/a n/a - -
NFC - Yes - -
USB Yes
Micro-USB
Yes
USB Type C
Yes
Mini-USB
-
Wi-Fi Yes
4 (802.11 b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
- -
Contacts
Picture ID n/a n/a - Yes
Ringer ID n/a n/a Yes Yes
Voice Dialing n/a n/a Yes -
Customization
Custom Graphics n/a n/a Yes Yes
Custom Ringtones n/a n/a Yes Yes
Real-Music Ringers n/a n/a Yes -
Data & Network
Data Tethering n/a n/a - -
WAP / Web Browser n/a n/a Yes Yes
Input
Predictive Text Entry n/a n/a Yes Yes
Side Keys Yes Yes Yes Yes
Stylus - Yes - -
Touch Screen Yes
Capacitive
Yes
Capacitive
- -
Memory
Memory Card Slot Yes Yes - -
Messaging
Email Client n/a n/a - -
EMS / Picture Messaging n/a n/a - Yes
Instant Messaging n/a n/a - -
MMS n/a n/a - Yes
Text Messaging Templates n/a n/a Yes Yes
Music
Headphone Jack (3.5mm) Yes Yes - -
Music Player n/a n/a - -
Stereo Speakers - Yes - -
Photo & Video
Miracast Yes Yes - -
TV Output - Yes - -
Power
Fast Charging - Yes - -
Wireless Charging - Yes - -
Productivity
Alarm n/a n/a Yes Yes
Calculator n/a n/a Yes Yes
Calendar n/a n/a Yes Yes
To-Do List n/a n/a - Yes
Voice Memo n/a n/a Yes Yes
Software
BREW n/a n/a Yes -
Games n/a n/a Yes Yes
Java (J2ME) n/a n/a - Yes
Voice
HD Voice Yes * Yes - -
Headset Jack (2.5 mm) n/a n/a Yes Yes
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  LG K4 / Optimus Zone 3 / Rebel Samsung Galaxy Note9 UTStarcom CDM-7126 Samsung SGH-X640
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone LG K4 / Optimus Zone 3 / Rebel Samsung Galaxy Note9 UTStarcom CDM-7126 Samsung SGH-X640

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