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Phone Samsung SGH-X820 Motorola moto g stylus (2021) Asus ROG Phone Samsung SCH-A990
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 6.8" diag.
20 : 9
6" diag.
18 : 9
?
Display Resolution & Type 220 x 176 pixels
LCD (TFT/TFD)
1080 x 2400 pixels
(~387 ppi)
LCD (TFT/TFD)
1080 x 2160 pixels
(~402 ppi)
AMOLED
240 x 320 pixels
LCD (TFT/TFD)
Display Refresh ? 60 Hz 60 Hz ?
Battery 650 mAh 4,000 mAh 4,000 mAh 1,000 mAh
Processor ? Qualcomm Snapdragon 678 3 GHz Qualcomm Snapdragon 845 ?
RAM ? 4 GB 8 GB ?
Storage ? raw hardware 128 GB 128 GB * ? raw hardware
Main Camera 2 megapixel 12 megapixel 12 megapixel 3 megapixel
Wide Camera - 8 megapixel 8 megapixel -
Tele Camera - - - -
Video Capture ? 4K UHD 4K UHD ?
Front Camera - 16 megapixel 8 megapixel -
Weight 2.33 oz
(66g)
7.6 oz
(215g)
7.05 oz
(200g)
4.4 oz
(125g)
Dimensions 4.45" x 1.97" x 0.27"
(113 x 50 x 6.9 mm)
6.69" x 3.08" x 0.37"
(170 x 78 x 9.4 mm)
6.25" x 3" x 0.34"
(159 x 76 x 8.6 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
Form Factor Slab Slab Slab Clamshell
Platform / OS (proprietary) Android Android (proprietary)
Network Bands

GSM: 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 20, 25, 26, 29, 38, 40, 41, 66, 71

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

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

CDMA: 850, 1900

Data Technology EDGE LTE (Cat 15) LTE (Cat 16) EVDO r0
Features 
Barometer - Yes - -
Fingerprint Reader - Yes
stand-alone
Yes -
Flashlight - Yes Yes Yes
GPS / Location - n/a n/a Yes
Water-Resistant - Yes Yes -
Accessibility
Hearing Aid Compatible - Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
Yes
M3 (mostly compatible)
Multiple Languages Yes n/a n/a Yes
TTY/TDD (Digital) - Yes - Yes
Alerts
Extra Display - - - Yes
Connectivity
Bluetooth Yes Yes Yes Yes
NFC - - Yes -
USB Yes Yes
USB Type C
Yes
USB Type C
Yes
Wi-Fi - Yes
5 (802.11 a,ac,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID Yes n/a n/a Yes
Ringer ID Yes n/a n/a Yes
Voice Dialing - n/a n/a Yes
Customization
Custom Graphics Yes n/a n/a Yes
Custom Ringtones Yes n/a n/a Yes
Real-Music Ringers Yes n/a n/a Yes
Data & Network
Data Tethering - n/a n/a Yes
Dual-SIM - - Yes -
External Antenna Jack Yes n/a n/a -
WAP / Web Browser Yes n/a n/a Yes
Input
Predictive Text Entry Yes n/a n/a Yes
Side Keys Yes Yes Yes Yes
Stylus - Yes - -
Touch Screen - Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot - Yes - Yes
Messaging
Email Client Yes n/a n/a -
EMS / Picture Messaging Yes n/a n/a Yes
MMS Yes n/a n/a Yes
Text Messaging Templates Yes n/a n/a Yes
Music
FM Radio - Yes Yes -
Headphone Jack (3.5mm) - Yes Yes -
Music Player - n/a n/a Yes
Stereo Speakers - - Yes Yes
Photo & Video
TV Output Yes - Yes Yes
Power
Fast Charging - Yes Yes -
Productivity
Alarm Yes n/a n/a Yes
Calculator Yes n/a n/a Yes
Calendar Yes n/a n/a Yes
To-Do List Yes n/a n/a -
Voice Memo Yes n/a n/a Yes
Software
BREW - n/a n/a Yes
Games Yes n/a n/a Yes
Java (J2ME) Yes n/a n/a -
Voice
HD Voice - Yes - -
Speaker Phone Yes Yes Yes Yes
  Samsung SGH-X820 Motorola moto g stylus (2021) Asus ROG Phone Samsung SCH-A990
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Phone Samsung SGH-X820 Motorola moto g stylus (2021) Asus ROG Phone Samsung SCH-A990

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