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Phone Samsung SCH-A990 AT&T Vista Samsung Galaxy Note20 Pantech Matrix Pro C820
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 5.5" diag.
18 : 9
6.7" diag.
20 : 9
2.4" diag.
4 : 3
Display Resolution & Type 240 x 320 pixels
LCD (TFT/TFD)
720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
1080 x 2400 pixels
(~393 ppi)
AMOLED
240 x 320 pixels
(~167 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz 60 Hz ?
Battery 1,000 mAh 2,450 mAh 4,300 mAh 1,320 mAh
Processor ? 2 GHz MediaTek Helio A22 (MT6761V) 3.1 GHz Qualcomm Snapdragon 865+ 528 MHz ARM 11
RAM ? 3 GB 8 GB ?
Storage ? raw hardware 32 GB 128 GB ? raw hardware
Main Camera 3 megapixel 8 megapixel 12 megapixel 2 megapixel
Wide Camera - - 12 megapixel -
Tele Camera - - 64 megapixel -
Video Capture ? 1080p HD 8K QCIF (176 x 144)
Front Camera - 5 megapixel 10 megapixel -
Weight 4.4 oz
(125g)
5.51 oz
(156g)
6.84 oz
(194g)
5.34 oz
(151g)
Dimensions 3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
5.88" x 2.82" x 0.35"
(149 x 72 x 8.9 mm)
6.36" x 2.96" x 0.33"
(162 x 75 x 8.3 mm)
4.2" x 2" x 0.9"
(107 x 51 x 22.9 mm)
Form Factor Clamshell Slab Slab Slide
Platform / OS (proprietary) Android Android Windows Mobile Standard
Network Bands

CDMA: 850, 1900

4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30

WCDMA: 1, 2, 4, 5, 8

5G: 2, 5, 12, 25, 41, 66, 71, 260, 261

4G LTE: 2, 4, 5, 7, 12, 13, 14, 25, 26, 29, 30, 38, 41, 46, 48, 66, 71

WCDMA: 2, 4, 5

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

*

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

Data Technology EVDO r0 LTE (Cat 4) NR (5G) HSDPA 3.6
Features 
Barometer - - Yes -
Fingerprint Reader - - Yes
in-display (ultrasonic)
-
Flashlight Yes Yes Yes -
GPS / Location Yes n/a n/a n/a
Water-Resistant - - Yes
IPX8 (SCUBA)
-
Accessibility
Hearing Aid Compatible Yes Yes Yes -
Multiple Languages Yes n/a n/a n/a
TTY/TDD (Digital) Yes - Yes Yes
Alerts
Extra Display Yes - - -
Ringer Profiles - - - Yes
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
NFC - - Yes -
USB Yes Yes
USB Type C
Yes
USB Type C
Yes
Wi-Fi - Yes Yes
6 (802.11 a,ac,ax,b,g,n)
-
Contacts
Picture ID Yes n/a n/a n/a
Ringer ID Yes n/a n/a n/a
Voice Dialing Yes n/a n/a n/a
Customization
Custom Graphics Yes n/a n/a n/a
Custom Ringtones Yes n/a n/a n/a
Real-Music Ringers Yes n/a n/a n/a
Data & Network
Data Tethering Yes n/a n/a n/a
WAP / Web Browser Yes n/a n/a n/a
Input
Predictive Text Entry Yes n/a n/a n/a
Side Keys Yes Yes Yes Yes
Stylus - - Yes -
Text Keyboard, Hardware - - - Yes
Touch Screen - Yes Yes -
Memory
Memory Card Slot Yes Yes - Yes
Messaging
Email Client - n/a n/a n/a
EMS / Picture Messaging Yes n/a n/a n/a
Instant Messaging - n/a n/a n/a
MMS Yes n/a n/a n/a
Text Messaging Templates Yes n/a n/a n/a
Music
Headphone Jack (3.5mm) - Yes - -
Music Player Yes n/a n/a n/a
Stereo Speakers Yes - Yes -
Photo & Video
TV Output Yes - Yes -
Power
Fast Charging - - Yes -
Wireless Charging - - Yes -
Productivity
Alarm Yes n/a n/a n/a
Calculator Yes n/a n/a n/a
Calendar Yes n/a n/a n/a
To-Do List - n/a n/a n/a
Voice Memo Yes n/a n/a n/a
Software
BREW Yes n/a n/a n/a
Games Yes n/a n/a n/a
Java (J2ME) - n/a n/a n/a
Voice
HD Voice - Yes Yes -
Speaker Phone Yes Yes Yes Yes
  Samsung SCH-A990 AT&T Vista Samsung Galaxy Note20 Pantech Matrix Pro C820
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SCH-A990 AT&T Vista Samsung Galaxy Note20 Pantech Matrix Pro C820

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