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Phone Samsung Galaxy S6 (GSM) LG Stylo 4 Samsung Galaxy S21
Current U.S. Carriers (none) (none) Verizon
Global Availability Released Released Released
Specifications 
Display Size 5.1" diag.
16 : 9
6.2" diag.
18 : 9
6.2" diag.
20 : 9
Display Resolution & Type 1440 x 2560 pixels
(~576 ppi)
AMOLED
1080 x 2160 pixels
(~390 ppi)
LCD (TFT/TFD)
1080 x 2400 pixels
(~424 ppi)
AMOLED
Display Refresh 60 Hz 60 Hz 120 Hz
Battery 2,550 mAh 3,300 mAh 4,000 mAh
Processor 2.1 GHz Samsung Exynos 7420 1.8 GHz Qualcomm Snapdragon 450 2.8 GHz Qualcomm Snapdragon 888
RAM 3 GB 2 GB * 8 GB
Storage 32 GB * 32 GB * 128 GB *
Main Camera 16 megapixel 13 megapixel 12 megapixel
Wide Camera - - 12 megapixel
Tele Camera - - 64 megapixel
Video Capture 4K UHD 1080p HD 8K
Front Camera 5 megapixel 5 megapixel 10 megapixel
Weight 4.87 oz
(138g)
6.07 oz
(172g)
6.03 oz
(171g)
Dimensions 5.65" x 2.78" x 0.27"
(143 x 71 x 6.8 mm)
6.31" x 3.06" x 0.33"
(160 x 78 x 8.4 mm)
5.97" x 2.8" x 0.31"
(152 x 71 x 7.9 mm)
Platform / OS Android Android Android
Network Bands

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 29, 30

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

*

4G LTE: 1, 2, 3, 4, 5, 7, 12, 13, 14, 20, 29, 30, 38, 41, 66, 71

WCDMA: 1, 2, 4, 5

GSM: 850, 900, 1800, 1900

*

5G: 2, 5, 12, 25, 30, 41, 66, 71, 77-C, 260, 261

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 46, 48, 66, 71

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

Data Technology LTE (Cat 6) LTE (Cat 6) NR (5G)
Features 
Barometer - - Yes
Fingerprint Reader Yes Yes
stand-alone
Yes
in-display (ultrasonic)
Flashlight Yes Yes Yes
VR-ready Yes - -
Water-Resistant - - Yes
IPX8 (SCUBA)
Accessibility
Hearing Aid Compatible Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
TTY/TDD (Digital) Yes Yes Yes
Connectivity
Bluetooth Yes Yes Yes
Infrared (IR) Yes - -
MirrorLink Yes - -
NFC Yes Yes * Yes
USB Yes
Micro-USB
Yes
USB Type C
Yes
USB Type C
Wi-Fi Yes
5 (802.11 a,ac,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
Yes
6 (802.11 a,ac,ax,b,g,n)
Input
Side Keys Yes Yes Yes
Stylus - Yes -
Touch Screen Yes
Capacitive
Yes
Capacitive
Yes
Capacitive
Memory
Memory Card Slot - Yes -
Music
FM Radio - Yes -
Headphone Jack (3.5mm) Yes Yes -
Stereo Speakers - - Yes
Photo & Video
DLNA Yes Yes -
Miracast Yes - -
TV Output Yes - Yes
Power
Fast Charging Yes - Yes
Wireless Charging Yes - Yes
Voice
HD Voice Yes Yes Yes
Speaker Phone Yes Yes Yes
  * Some versions only
  Samsung Galaxy S6 (GSM) LG Stylo 4 Samsung Galaxy S21
  X > < X > < X

NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung Galaxy S6 (GSM) LG Stylo 4 Samsung Galaxy S21

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