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Phone Samsung Galaxy S II Skyrocket Samsung Galaxy Z Fold4 Samsung Galaxy Note20 Samsung Galaxy Note 4 (CDMA)
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 4.5" diag.
5 : 3
7.6" diag.
4 : 3
6.7" diag.
20 : 9
5.7" diag.
16 : 9
Display Resolution & Type 480 x 800 pixels
(~207 ppi)
AMOLED
1812 x 2176 pixels
(~373 ppi)
AMOLED
1080 x 2400 pixels
(~393 ppi)
AMOLED
1440 x 2560 pixels
(~515 ppi)
AMOLED
Display Refresh 60 Hz 120 Hz 60 Hz 60 Hz
Battery 1,850 mAh 4,400 mAh 4,300 mAh 3,220 mAh
Processor 1.5 GHz Qualcomm Snapdragon S3 APQ8060 3.2 GHz Snapdragon 8+ Gen 1 3.1 GHz Qualcomm Snapdragon 865+ 2.7 GHz Qualcomm Snapdragon 805
RAM 1 GB 12 GB 8 GB 3 GB
Storage 16 GB 256 GB * 128 GB 32 GB
Main Camera 8 megapixel 50 megapixel 12 megapixel 16 megapixel
Wide Camera - 12 megapixel 12 megapixel -
Tele Camera - 10 megapixel 64 megapixel -
Video Capture 1080p HD 4K UHD 8K 4K UHD
Front Camera 2 megapixel 10 megapixel 10 megapixel 4 megapixel
Weight 4.71 oz
(133g)
9.28 oz
(263g)
6.84 oz
(194g)
6.21 oz
(176g)
Dimensions 5.12" x 2.72" x 0.35"
(130 x 69 x 9 mm)
6.11" x 2.64" x 0.62"
(155 x 67 x 15.8 mm)
6.36" x 2.96" x 0.33"
(162 x 75 x 8.3 mm)
6.04" x 3.09" x 0.33"
(154 x 79 x 8.5 mm)
Platform / OS Android Android Android Android
Network Bands

4G LTE: 4, 17

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

5G: 2, 5, 7, 12, 25, 30, 38, 41, 48, 66, 71, 77-A, 77-C, 78, 258, 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

GSM: 850, 900, 1800, 1900

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

*

4G LTE: 4, 13

WCDMA: 1, 2, 5

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

*

Data Technology LTE (Cat 3) NR (5G) NR (5G) LTE (Cat 4)
Features 
Barometer - Yes Yes -
Fingerprint Reader - Yes
stand-alone
Yes
in-display (ultrasonic)
Yes
Flashlight - Yes Yes Yes
Water-Resistant - Yes
IPX8 (SCUBA)
Yes
IPX8 (SCUBA)
-
Accessibility
Hearing Aid Compatible Yes
M3 (mostly compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
TTY/TDD (Digital) Yes Yes Yes Yes
Alerts
Extra Display - Yes - -
Connectivity
Bluetooth Yes Yes Yes Yes
Infrared (IR) - - - Yes
MirrorLink - - - Yes
NFC Yes Yes Yes Yes
USB Yes
Micro-USB
Yes
USB Type C
Yes
USB Type C
Yes
Micro-USB
UWB - Yes - -
Wi-Fi Yes
4 (802.11 a,b,g,n)
Yes
6E (802.11 a,ac,ax,b,g,n)
Yes
6 (802.11 a,ac,ax,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
Data & Network
Dual-SIM - Yes - -
Input
Side Keys Yes Yes Yes Yes
Stylus - Yes Yes Yes
Touch Screen Yes
Capacitive
Yes
Capacitive
Yes
Capacitive
Yes
Capacitive
Memory
Memory Card Slot Yes - - Yes
Music
Headphone Jack (3.5mm) Yes - - Yes
Stereo Speakers - - Yes -
Photo & Video
DLNA Yes - - -
TV Output Yes Yes Yes Yes
Power
Fast Charging - Yes Yes Yes
Wireless Charging - Yes Yes -
Voice
HD Voice - Yes Yes Yes
Speaker Phone Yes Yes Yes Yes
  Samsung Galaxy S II Skyrocket Samsung Galaxy Z Fold4 Samsung Galaxy Note20 Samsung Galaxy Note 4 (CDMA)
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung Galaxy S II Skyrocket Samsung Galaxy Z Fold4 Samsung Galaxy Note20 Samsung Galaxy Note 4 (CDMA)

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