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Phone Samsung M520 Nubia Red Magic 3 / 3S Motorola Flipside Motorola Moto Z2 Force Samsung SGH-X820
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 2.1" diag.
4 : 3
6.7" diag.
19.5 : 9
3.1" diag.
5 : 3
5.5" diag.
16 : 9
?
Display Resolution & Type 176 x 220 pixels
(~134 ppi)
LCD (TFT/TFD)
1080 x 2340 pixels
(~388 ppi)
AMOLED
320 x 480 pixels
(~186 ppi)
LCD (TFT/TFD)
1440 x 2560 pixels
(~534 ppi)
AMOLED
220 x 176 pixels
LCD (TFT/TFD)
Display Refresh ? 90 Hz 60 Hz 60 Hz ?
Battery ? 5,000 mAh 1,150 mAh 2,730 mAh 650 mAh
Processor ? Qualcomm Snapdragon 855+ 720 MHz TI OMAP 3410 2.4 GHz Qualcomm Snapdragon 835 (MSM8998) ?
RAM ? 8 GB * ? 4 GB ?
Storage ? raw hardware 128 GB * ? raw hardware 64 GB ? raw hardware
Main Camera 1 megapixel 48 megapixel 3 megapixel 12 megapixel 2 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture ? 4K UHD CIF (352 x 288) 4K UHD ?
Front Camera - 16 megapixel - 5 megapixel -
Weight 2.75 oz
(78g)
7.58 oz
(215g)
5.11 oz
(145g)
5.04 oz
(143g)
2.33 oz
(66g)
Dimensions 4.01" x 2.04" x 0.5"
(102 x 52 x 12.7 mm)
6.76" x 3.09" x 0.38"
(172 x 79 x 9.7 mm)
4.31" x 2.26" x 0.59"
(109 x 57 x 15 mm)
6.13" x 2.99" x 0.24"
(156 x 76 x 6.1 mm)
4.45" x 1.97" x 0.27"
(113 x 50 x 6.9 mm)
Form Factor Slide Slab Slide Slab Slab
Platform / OS (proprietary) Android Android Android (proprietary)
Network Bands

CDMA: 850, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 30, 34, 38, 39, 40, 41, 66

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

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 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

*

GSM: 900, 1800, 1900

Data Technology EVDO r0 LTE (Cat 9) HSPA 7.2 LTE (Cat 16) EDGE
Features 
Barometer - - - Yes -
Fingerprint Reader - Yes
stand-alone
- Yes
stand-alone
-
Flashlight - Yes - Yes -
GPS / Location Yes n/a n/a n/a -
VR-ready - - - Yes -
Water-Resistant - - - Yes -
Accessibility
Hearing Aid Compatible Yes - Yes Yes -
Multiple Languages Yes n/a n/a n/a Yes
TTY/TDD (Digital) Yes Yes Yes Yes -
Connectivity
Bluetooth Yes Yes Yes Yes Yes
NFC - - - Yes -
USB Yes Yes
USB Type C
Yes
Micro-USB
Yes
USB Type C
Yes
Wi-Fi - Yes
5 (802.11 a,ac,b,g,n)
Yes Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID Yes n/a n/a n/a Yes
Ringer ID Yes n/a n/a n/a Yes
Voice Dialing Yes n/a n/a n/a -
Customization
Custom Graphics Yes n/a n/a n/a Yes
Custom Ringtones Yes n/a n/a n/a Yes
Real-Music Ringers - n/a n/a n/a Yes
Data & Network
Data Tethering Yes n/a n/a n/a -
Dual-SIM - Yes - Yes * -
External Antenna Jack - n/a n/a n/a Yes
WAP / Web Browser Yes n/a n/a n/a Yes
Input
Predictive Text Entry Yes n/a n/a n/a Yes
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - Yes 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 n/a n/a Yes
Instant Messaging - n/a n/a n/a -
MMS - n/a n/a n/a Yes
Text Messaging Templates Yes n/a n/a n/a Yes
Music
FM Radio - - Yes - -
Headphone Jack (3.5mm) - Yes Yes - -
Music Player Yes n/a n/a n/a -
Stereo Speakers - Yes - - -
Photo & Video
TV Output - Yes - - Yes
Power
Fast Charging - Yes - Yes -
Productivity
Alarm Yes n/a n/a n/a Yes
Calculator Yes n/a n/a n/a Yes
Calendar Yes n/a n/a n/a Yes
To-Do List Yes n/a n/a n/a Yes
Voice Memo Yes n/a n/a n/a Yes
Software
Games Yes n/a n/a n/a Yes
Java (J2ME) Yes n/a n/a n/a Yes
Voice
HD Voice - Yes - Yes -
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  Samsung M520 Nubia Red Magic 3 / 3S Motorola Flipside Motorola Moto Z2 Force Samsung SGH-X820
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung M520 Nubia Red Magic 3 / 3S Motorola Flipside Motorola Moto Z2 Force Samsung SGH-X820

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