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Phone LG K4 / Optimus Zone 3 / Rebel ZTE Solar TCL 20 SE Motorola Moto X (CDMA, 2nd gen.) Samsung SGH-X640
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 4.5" diag.
16 : 9
4.5" diag.
16 : 9
6.8" diag.
20.5 : 9
5.2" diag.
16 : 9
?
Display Resolution & Type 480 x 854 pixels
(~218 ppi)
LCD (TFT/TFD)
480 x 854 pixels
(~218 ppi)
LCD (TFT/TFD)
720 x 1640 pixels
(~263 ppi)
LCD (TFT/TFD)
1080 x 1920 pixels
(~424 ppi)
AMOLED
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh 60 Hz 60 Hz 60 Hz 60 Hz ?
Battery 1,940 mAh 2,070 mAh 5,000 mAh 2,300 mAh 800 mAh
Processor 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) 1.2 GHz Qualcomm Snapdragon 200 MSM8625 1.6 GHz Qualcomm Snapdragon 460 2.5 GHz Qualcomm Snapdragon 801 (MSM8974-AC) ?
RAM 1.5 GB 768 MB 4 GB 2 GB ?
Storage 16 GB * 4 GB 128 GB 16 GB * ? raw hardware
Main Camera 5 megapixel 5 megapixel 48 megapixel 13 megapixel Yes
Wide Camera - - 5 megapixel - -
Tele Camera - - - - -
Video Capture 720p HD WVGA / 480p 1080p HD 4K UHD -
Front Camera 2 megapixel - 13 megapixel 2 megapixel -
Weight 3.99 oz
(113g)
5.54 oz
(157g)
7.31 oz
(207g)
5.08 oz
(144g)
3 oz
(85g)
Dimensions 5.19" x 2.62" x 0.35"
(132 x 67 x 8.9 mm)
5.24" x 2.6" x 0.39"
(133 x 66 x 9.9 mm)
6.78" x 3.04" x 0.35"
(172 x 77 x 8.9 mm)
5.54" x 2.85" x 0.39"
(141 x 72 x 9.9 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
Form Factor Slab Slab Slab Slab Clamshell
Platform / OS Android Android Android Android (proprietary)
Network Bands

4G LTE: 2, 4, 5, 13

WCDMA: 1, 2, 5

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

*

WCDMA: 2, 5

GSM: 850, 1900

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

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

4G LTE: 2, 3, 4, 7, 13

WCDMA: 1, 2, 5, 8

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

*

GSM: 900, 1800, 1900

Data Technology LTE (Cat 3) HSPA 7.2 LTE (Cat 4) LTE (Cat 4) GPRS
Features 
Fingerprint Reader - - Yes
stand-alone
- -
Flashlight Yes - Yes - -
GPS / Location n/a n/a n/a n/a -
Accessibility
Adjustable Text Size n/a n/a n/a n/a -
Hearing Aid Compatible Yes Yes Yes Yes -
Multiple Languages n/a n/a n/a n/a Yes
TTY/TDD (Digital) Yes Yes Yes Yes -
Connectivity
Bluetooth Yes Yes Yes Yes -
Mobile Hotspot n/a n/a n/a n/a -
NFC - - - Yes -
USB Yes
Micro-USB
Yes
Micro-USB
Yes
USB Type C
Yes
Micro-USB
-
Wi-Fi Yes
4 (802.11 b,g,n)
Yes
4 (802.11 b,g,n)
Yes
4 (802.11 b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID n/a n/a n/a n/a Yes
Ringer ID n/a n/a n/a n/a Yes
Voice Dialing n/a n/a n/a n/a -
Customization
Custom Graphics n/a n/a n/a n/a Yes
Custom Ringtones n/a n/a n/a n/a Yes
Real-Music Ringers n/a n/a n/a n/a -
Data & Network
Data Tethering n/a n/a n/a n/a -
WAP / Web Browser n/a n/a n/a n/a Yes
Input
Predictive Text Entry n/a n/a n/a n/a Yes
Side Keys Yes Yes Yes Yes Yes
Touch Screen Yes Yes Yes Yes -
Memory
Memory Card Slot Yes Yes Yes - -
Messaging
Email Client n/a n/a n/a n/a -
EMS / Picture Messaging n/a n/a n/a n/a Yes
Instant Messaging n/a n/a n/a n/a -
MMS n/a n/a n/a n/a Yes
Text Messaging Templates n/a n/a n/a n/a Yes
Music
FM Radio - - Yes - -
Headphone Jack (3.5mm) Yes Yes Yes Yes -
Music Player n/a n/a n/a n/a -
Photo & Video
Miracast Yes - - Yes -
Power
Fast Charging - - - Yes -
Productivity
Alarm n/a n/a n/a n/a Yes
Calculator n/a n/a n/a n/a Yes
Calendar n/a n/a n/a n/a Yes
To-Do List n/a n/a n/a n/a Yes
Voice Memo n/a n/a n/a n/a Yes
Software
Games n/a n/a n/a n/a Yes
Java (J2ME) n/a n/a n/a n/a Yes
Voice
HD Voice Yes * - Yes - -
Headset Jack (2.5 mm) n/a n/a n/a n/a Yes
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  LG K4 / Optimus Zone 3 / Rebel ZTE Solar TCL 20 SE Motorola Moto X (CDMA, 2nd gen.) 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 ZTE Solar TCL 20 SE Motorola Moto X (CDMA, 2nd gen.) Samsung SGH-X640

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