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Phone Motorola V220 Asus ROG Phone Ericsson R278d Samsung Knack U310 Samsung Sidekick 4G
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 6" diag.
18 : 9
? 2.2" diag.
4 : 3
3.5" diag.
5 : 3
Display Resolution & Type 128 x 128 pixels
LCD (STN)
1080 x 2160 pixels
(~402 ppi)
AMOLED
101 x 40 pixels 176 x 220 pixels
(~128 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~267 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? ? 60 Hz
Battery 820 mAh 4,000 mAh ? 1,000 mAh ?
Processor ? 3 GHz Qualcomm Snapdragon 845 ? ? 1 GHz Samsung Hummingbird Cortex A8
RAM ? 8 GB ? ? ?
Storage ? raw hardware 128 GB * ? raw hardware ? raw hardware ? raw hardware
Main Camera Yes 12 megapixel - - 3 megapixel
Wide Camera - 8 megapixel - - -
Tele Camera - - - - -
Video Capture - 4K UHD - - WVGA / 480p
Front Camera - 8 megapixel - - Yes
Weight 3.7 oz
(105g)
7.05 oz
(200g)
9.28 oz
(263g)
3.63 oz
(103g)
5.7 oz
(162g)
Dimensions 3.29" x 1.73" x 0.94"
(84 x 44 x 23.9 mm)
6.25" x 3" x 0.34"
(159 x 76 x 8.6 mm)
5.1" x 2" x 1"
(130 x 51 x 25.4 mm)
3.78" x 2.01" x 0.74"
(96 x 51 x 18.8 mm)
5" x 2.42" x 0.6"
(127 x 61 x 15.2 mm)
Form Factor Clamshell Slab Slab Clamshell Slide
Platform / OS (proprietary) Android (proprietary) (proprietary) Android
Network Bands

GSM: 850, 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

TDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

WCDMA: 1, 4

GSM: 850, 900, 1800, 1900

Data Technology GPRS LTE (Cat 16) - - HSPA+ 21
Features 
Fingerprint Reader - Yes - - -
Flashlight - Yes - - -
GPS / Location - n/a - Yes n/a
Water-Resistant - Yes - - -
Accessibility
Adjustable Text Size - n/a - Yes n/a
Hearing Aid Compatible Yes
M3 (mostly compatible)
Yes
M4, T3 (mostly tele-coil compatible)
- Yes
M4, T4 (very tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Multiple Languages Yes n/a Yes Yes n/a
TTY/TDD (Digital) - - - Yes Yes
Alerts
Extra Display Yes - - Yes -
Ringer Profiles Yes - Yes - -
Connectivity
Bluetooth - Yes - - Yes
Mobile Hotspot - n/a - - n/a
NFC - Yes - - -
USB Yes Yes
USB Type C
- - Yes
Micro-USB
Wi-Fi - Yes
5 (802.11 a,ac,b,g,n)
- - Yes
4 (802.11 b,g,n)
Contacts
Picture ID Yes n/a - - n/a
Ringer ID Yes n/a - - n/a
Voice Dialing Yes n/a - Yes n/a
Customization
Custom Graphics Yes n/a - - n/a
Custom Ringtones Yes n/a Yes - n/a
Real-Music Ringers Yes n/a - - n/a
Data & Network
Data Tethering Yes n/a Yes - n/a
Dual-SIM - Yes - - -
WAP / Web Browser Yes n/a Yes - n/a
Input
Predictive Text Entry Yes n/a Yes Yes n/a
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - - - - Yes
Touch Screen - Yes
Capacitive
- - Yes
Memory
Memory Card Slot - - - - Yes
Messaging
Email Client - n/a - - n/a
EMS / Picture Messaging Yes n/a - Yes n/a
Instant Messaging Yes n/a - - n/a
MMS Yes n/a - - n/a
Text Messaging Templates Yes n/a - - n/a
Music
FM Radio - Yes - - -
Headphone Jack (3.5mm) - Yes - - Yes
Music Player - n/a - - n/a
Stereo Speakers - Yes - - -
Photo & Video
DLNA - - - - Yes
TV Output - Yes - - -
Power
Fast Charging - Yes - - -
Productivity
Alarm Yes n/a Yes Yes n/a
Calculator Yes n/a - Yes n/a
Calendar Yes n/a - Yes n/a
Software
Games Yes n/a - - n/a
Java (J2ME) Yes n/a - - n/a
Voice
Headset Jack (2.5 mm) Yes n/a - Yes n/a
Speaker Phone Yes Yes - Yes Yes
  Motorola V220 Asus ROG Phone Ericsson R278d Samsung Knack U310 Samsung Sidekick 4G
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Motorola V220 Asus ROG Phone Ericsson R278d Samsung Knack U310 Samsung Sidekick 4G

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