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Phone Asus ROG Phone II Samsung SGH-X640 Motorola Moto Z2 Force Samsung Galaxy Note8 ZTE Z331
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Not yet released Released Released Released Released
Specifications 
Display Size 6.6" diag.
19.5 : 9
? 5.5" diag.
16 : 9
6.3" diag.
18.5 : 9
2.4" diag.
4 : 3
Display Resolution & Type 1080 x 2340 pixels
(~391 ppi)
AMOLED
128 x 160 pixels
LCD (TFT/TFD)
1440 x 2560 pixels
(~534 ppi)
AMOLED
1440 x 2960 pixels
(~522 ppi)
AMOLED
176 x 220 pixels
(~117 ppi)
LCD (TFT/TFD)
Display Refresh 120 Hz ? 60 Hz 60 Hz ?
Battery 6,000 mAh 800 mAh 2,730 mAh 3,300 mAh 950 mAh
Processor 3 GHz Qualcomm Snapdragon 855 Plus ? 2.4 GHz Qualcomm Snapdragon 835 (MSM8998) 2.4 GHz Qualcomm Snapdragon 835 (MSM8998) ?
RAM 12 GB ? 4 GB 6 GB ?
Storage 512 GB ? raw hardware 64 GB 64 GB * ? raw hardware
Main Camera 48 megapixel Yes 12 megapixel 12 megapixel 3 megapixel
Wide Camera 13 megapixel - - - -
Tele Camera - - - 12 megapixel -
Video Capture 4K UHD - 4K UHD 4K UHD QCIF (176 x 144)
Front Camera 24 megapixel - 5 megapixel 8 megapixel -
Weight 8.47 oz
(240g)
3 oz
(85g)
5.04 oz
(143g)
6.88 oz
(195g)
4 oz
(113g)
Dimensions 6.73" x 3.06" x 0.37"
(171 x 78 x 9.5 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
6.13" x 2.99" x 0.24"
(156 x 76 x 6.1 mm)
6.4" x 2.94" x 0.34"
(163 x 75 x 8.6 mm)
3.84" x 2.02" x 0.69"
(98 x 51 x 17.5 mm)
Form Factor Slab Clamshell Slab Slab Clamshell
Platform / OS Android (proprietary) Android Android (proprietary)
Network Bands

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 18, 19, 20, 26, 28, 29, 32, 34, 38, 39, 40, 41, 46, 66

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

GSM: 850, 900, 1800, 1900

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: 1, 2, 3, 4, 5, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 41, 66

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

Data Technology LTE (Cat 20) GPRS LTE (Cat 16) LTE (Cat 16) HSDPA 3.6
Features 
Barometer - - Yes Yes -
Fingerprint Reader Yes
in-display (optical)
- Yes
stand-alone
Yes
stand-alone
-
Flashlight Yes - Yes Yes -
GPS / Location n/a - n/a n/a Yes
VR-ready - - Yes Yes -
Water-Resistant - - Yes Yes
IPX8 (SCUBA)
-
Accessibility
Hearing Aid Compatible Yes - Yes Yes Yes
Multiple Languages n/a Yes n/a n/a Yes
TTY/TDD (Digital) - - Yes Yes Yes
Alerts
Extra Display - - - - Yes
Ringer Profiles - - - - Yes
Connectivity
Bluetooth Yes - Yes Yes Yes
MirrorLink - - - Yes -
NFC Yes - Yes Yes -
USB Yes
USB Type C
- Yes
USB Type C
Yes
USB Type C
Yes
Micro-USB
Wi-Fi Yes
5 (802.11 a,ac,b,g,n)
- Yes
5 (802.11 a,ac,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID n/a Yes n/a n/a Yes
Ringer ID n/a Yes n/a n/a Yes
Customization
Custom Graphics n/a Yes n/a n/a Yes
Custom Ringtones n/a Yes n/a n/a Yes
Real-Music Ringers n/a - n/a n/a Yes
Data & Network
Data Tethering n/a - n/a n/a Yes
Dual-SIM Yes - Yes * - -
WAP / Web Browser n/a Yes n/a n/a Yes
Input
Predictive Text Entry n/a Yes n/a n/a Yes
Side Keys Yes Yes Yes Yes Yes
Stylus - - - Yes -
Touch Screen Yes - Yes Yes -
Memory
Memory Card Slot - - Yes Yes Yes
Messaging
Email Client n/a - n/a n/a Yes
EMS / Picture Messaging n/a Yes n/a n/a -
Instant Messaging n/a - n/a n/a Yes
MMS n/a Yes n/a n/a Yes
Text Messaging Templates n/a Yes n/a n/a Yes
Music
FM Radio Yes - - - -
Headphone Jack (3.5mm) Yes - - Yes -
Music Player n/a - n/a n/a Yes
Stereo Speakers Yes - - - -
Photo & Video
Miracast - - - Yes -
TV Output Yes - - - -
Power
Fast Charging Yes - Yes Yes -
Wireless Charging - - - Yes -
Productivity
Alarm n/a Yes n/a n/a Yes
Calculator n/a Yes n/a n/a Yes
Calendar n/a Yes n/a n/a Yes
To-Do List n/a Yes n/a n/a -
Voice Memo n/a Yes n/a n/a Yes
Software
Games n/a Yes n/a n/a Yes
Java (J2ME) n/a Yes n/a n/a Yes
Voice
HD Voice - - Yes Yes -
Headset Jack (2.5 mm) n/a Yes n/a n/a -
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  Asus ROG Phone II Samsung SGH-X640 Motorola Moto Z2 Force Samsung Galaxy Note8 ZTE Z331
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Asus ROG Phone II Samsung SGH-X640 Motorola Moto Z2 Force Samsung Galaxy Note8 ZTE Z331

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