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Phone HTC G2 Samsung Galaxy S21 Samsung Galaxy S II / SGH-i777
Current U.S. Carriers (none) Verizon (none)
Global Availability Released Released Released
Specifications 
Display Size 3.7" diag.
5 : 3
6.2" diag.
20 : 9
4.3" diag.
5 : 3
Display Resolution & Type 480 x 800 pixels
(~252 ppi)
LCD (TFT/TFD)
1080 x 2400 pixels
(~424 ppi)
AMOLED
480 x 800 pixels
(~217 ppi)
AMOLED
Display Refresh 60 Hz 120 Hz 60 Hz
Battery 1,300 mAh 4,000 mAh 1,650 mAh
Processor 800 MHz Qualcomm S2 MSM7230 2.8 GHz Qualcomm Snapdragon 888 1.2 GHz Samsung Exynos dual-core
RAM ? 8 GB ?
Storage ? raw hardware 128 GB * 16 GB
Main Camera 5 megapixel 12 megapixel 8 megapixel
Wide Camera - 12 megapixel -
Tele Camera - 64 megapixel -
Video Capture 720p HD 8K 1080p HD
Front Camera - 10 megapixel 2 megapixel
Weight 6.5 oz
(184g)
6.03 oz
(171g)
4.3 oz
(122g)
Dimensions 4.68" x 2.37" x 0.55"
(119 x 60 x 14 mm)
5.97" x 2.8" x 0.31"
(152 x 71 x 7.9 mm)
4.96" x 2.6" x 0.35"
(126 x 66 x 8.9 mm)
Platform / OS Android Android Android
Network Bands

WCDMA: 1, 4

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

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

Data Technology HSPA 14.4 NR (5G) HSPA+ 21
Features 
Barometer - Yes -
Fingerprint Reader - Yes
in-display (ultrasonic)
-
Flashlight - Yes -
Water-Resistant - Yes
IPX8 (SCUBA)
-
Accessibility
Hearing Aid Compatible Yes
M3 (mostly compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3 (mostly compatible)
TTY/TDD (Digital) - Yes Yes
Connectivity
Bluetooth Yes Yes Yes
NFC - Yes Yes
USB Yes Yes
USB Type C
Yes
Micro-USB
Wi-Fi Yes
4 (802.11 b,g,n)
Yes
6 (802.11 a,ac,ax,b,g,n)
Yes
4 (802.11 a,b,g,n)
Input
Side Keys Yes Yes Yes
Text Keyboard, Hardware Yes - -
Touch Screen 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
Power
Fast Charging - Yes -
Wireless Charging - Yes -
Voice
HD Voice - Yes -
Speaker Phone Yes Yes Yes
  HTC G2 Samsung Galaxy S21 Samsung Galaxy S II / SGH-i777
  X > < X > < X

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

 
Phone HTC G2 Samsung Galaxy S21 Samsung Galaxy S II / SGH-i777

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