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Phone ZTE Grand X 3 Asus ROG Phone LG K20 / Harmony / Grace Sanyo RL-4920
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 5.5" diag.
16 : 9
6" diag.
18 : 9
5.3" diag.
16 : 9
?
Display Resolution & Type 720 x 1280 pixels
(~267 ppi)
LCD (TFT/TFD)
1080 x 2160 pixels
(~402 ppi)
AMOLED
720 x 1280 pixels
(~277 ppi)
LCD (TFT/TFD)
128 x 112 pixels
LCD (Color)
Display Refresh 60 Hz 60 Hz 60 Hz ?
Battery 3,080 mAh 4,000 mAh 2,800 mAh 1,700 mAh
Processor 1.3 GHz Qualcomm Snapdragon 210 (MSM8909) 3 GHz Qualcomm Snapdragon 845 1.4 GHz Qualcomm Snapdragon 425 (MSM8917) ?
RAM 2 GB 8 GB 1.5 GB ?
Storage 16 GB 128 GB * 16 GB ? raw hardware
Main Camera 8 megapixel 12 megapixel 8 megapixel -
Wide Camera - 8 megapixel - -
Tele Camera - - - -
Video Capture 720p HD 4K UHD 1080p HD -
Front Camera 2 megapixel 8 megapixel 5 megapixel -
Weight 6 oz
(170g)
7.05 oz
(200g)
5 oz
(142g)
4.03 oz
(114g)
Dimensions 6.07" x 2.99" x 0.37"
(154 x 76 x 9.4 mm)
6.25" x 3" x 0.34"
(159 x 76 x 8.6 mm)
5.9" x 3" x 0.3"
(150 x 76 x 7.6 mm)
4.22" x 1.85" x 0.85"
(107 x 47 x 21.6 mm)
Form Factor Slab Slab Slab Slab
Platform / OS Android Android Android (proprietary)
Network Bands

4G LTE: 2, 4, 5, 12

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 28, 29, 32, 34, 38, 39, 40, 41, 46

WCDMA: 1, 2, 3, 4, 5, 8, 19

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 5, 12

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

Data Technology LTE (Cat 4) LTE (Cat 16) LTE (Cat 4) 1xRTT
Features 
Fingerprint Reader - Yes - -
Flashlight Yes Yes Yes -
GPS / Location n/a n/a n/a Yes
Water-Resistant - Yes - -
Accessibility
Hearing Aid Compatible Yes
M4, T3 (mostly tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
-
Multiple Languages n/a n/a n/a Yes
TTY/TDD (Digital) Yes - Yes Yes
Connectivity
Bluetooth Yes Yes Yes -
NFC - Yes Yes * -
USB Yes
USB Type C
Yes
USB Type C
Yes
Micro-USB
Yes
Wi-Fi Yes
4 (802.11 b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID n/a n/a n/a Yes
Ringer ID n/a n/a n/a Yes
Voice Dialing n/a n/a n/a Yes
Customization
Custom Graphics n/a n/a n/a Yes
Custom Ringtones n/a n/a n/a Yes
Data & Network
Dual-SIM - Yes - -
WAP / Web Browser n/a n/a n/a Yes
Input
Predictive Text Entry n/a n/a n/a Yes
Side Keys Yes Yes Yes Yes
Touch Screen Yes
Capacitive
Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot Yes - Yes -
Music
FM Radio - Yes Yes -
Headphone Jack (3.5mm) Yes Yes Yes -
Stereo Speakers - Yes - -
Photo & Video
TV Output - Yes - -
Power
Fast Charging Yes Yes - -
Productivity
Alarm n/a n/a n/a Yes
Calculator n/a n/a n/a Yes
Calendar n/a n/a n/a Yes
To-Do List n/a n/a n/a Yes
Voice Memo n/a n/a n/a Yes
Software
Games n/a n/a n/a Yes
Java (J2ME) n/a n/a n/a Yes
Voice
Call Screening - - - Yes
HD Voice Yes - Yes -
Headset Jack (2.5 mm) n/a n/a n/a Yes
Push-To-Talk - - - Yes
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  ZTE Grand X 3 Asus ROG Phone LG K20 / Harmony / Grace Sanyo RL-4920
  X > < X > < X > < X

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

 
Phone ZTE Grand X 3 Asus ROG Phone LG K20 / Harmony / Grace Sanyo RL-4920

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