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Phone Samsung Galaxy S21 Huawei M750 AT&T Vista HP Elite x3
Current U.S. Carriers Verizon (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 6.2" diag.
20 : 9
2.8" diag.
4 : 3
5.5" diag.
18 : 9
6" diag.
16 : 9
Display Resolution & Type 1080 x 2400 pixels
(~424 ppi)
AMOLED
240 x 320 pixels
(~143 ppi)
LCD (TFT/TFD)
720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
1440 x 2560 pixels
(~493 ppi)
AMOLED
Display Refresh 120 Hz ? 60 Hz ?
Battery 4,000 mAh 1,150 mAh 2,450 mAh 4,150 mAh
Processor 2.8 GHz Qualcomm Snapdragon 888 ? 2 GHz MediaTek Helio A22 (MT6761V) 2.2 GHz Qualcomm Snapdragon 820 (MSM8996)
RAM 8 GB ? 3 GB 4 GB
Storage 128 GB * ? raw hardware 32 GB 64 GB
Main Camera 12 megapixel 1 megapixel 8 megapixel 16 megapixel
Wide Camera 12 megapixel - - -
Tele Camera 64 megapixel - - -
Video Capture 8K - 1080p HD 4K UHD
Front Camera 10 megapixel - 5 megapixel 8 megapixel
Weight 6.03 oz
(171g)
3.92 oz
(111g)
5.51 oz
(156g)
6.84 oz
(194g)
Dimensions 5.97" x 2.8" x 0.31"
(152 x 71 x 7.9 mm)
4.21" x 2.25" x 0.59"
(107 x 57 x 14.9 mm)
5.88" x 2.82" x 0.35"
(149 x 72 x 8.9 mm)
6.36" x 3.29" x 0.31"
(162 x 84 x 7.9 mm)
Form Factor Slab Slab Slab Slab
Platform / OS Android (proprietary) Android Windows
Network Bands

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

CDMA: 850, 1700, 1900

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

WCDMA: 1, 2, 4, 5, 8

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

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

Data Technology NR (5G) 1xRTT LTE (Cat 4) LTE (Cat 6)
Features 
Barometer Yes - - Yes
Fingerprint Reader Yes
in-display (ultrasonic)
- - Yes
Flashlight Yes - Yes Yes
GPS / Location n/a Yes n/a n/a
Water-Resistant Yes
IPX8 (SCUBA)
- - Yes
IPX7 (snorkeling)
Accessibility
Hearing Aid Compatible Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3 (mostly compatible)
Yes
M4, T4 (very tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
Multiple Languages n/a - n/a n/a
TTY/TDD (Digital) Yes Yes - Yes
Connectivity
Bluetooth Yes Yes Yes Yes
NFC Yes - - Yes
USB Yes
USB Type C
Yes Yes
USB Type C
Yes
USB Type C
Wi-Fi Yes
6 (802.11 a,ac,ax,b,g,n)
- Yes Yes
5 (802.11 a,ac,b,g,n)
Contacts
Picture ID n/a Yes n/a n/a
Ringer ID n/a Yes n/a n/a
Customization
Custom Graphics n/a Yes n/a n/a
Custom Ringtones n/a Yes n/a n/a
Data & Network
Dual-SIM - - - Yes *
WAP / Web Browser n/a Yes n/a n/a
Input
Side Keys Yes Yes Yes Yes
Stylus - Yes - -
Touch Screen Yes
Capacitive
Yes
Resistive
Yes
Capacitive
Yes
Capacitive
Memory
Memory Card Slot - Yes Yes Yes
Messaging
Email Client n/a Yes n/a n/a
Instant Messaging n/a Yes n/a n/a
MMS n/a Yes n/a n/a
Text Messaging Templates n/a Yes n/a n/a
Music
Headphone Jack (3.5mm) - Yes Yes Yes
Music Player n/a Yes n/a n/a
Stereo Speakers Yes - - Yes
Photo & Video
Miracast - - - Yes
TV Output Yes - - Yes
Power
Fast Charging Yes - - -
Wireless Charging Yes - - Yes
Productivity
Alarm n/a Yes n/a n/a
Calculator n/a Yes n/a n/a
Calendar n/a Yes n/a n/a
Voice Memo n/a Yes n/a n/a
Software
BREW n/a Yes n/a n/a
Games n/a Yes n/a n/a
Voice
HD Voice Yes - Yes -
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  Samsung Galaxy S21 Huawei M750 AT&T Vista HP Elite x3
  X > < X > < X > < X

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

 
Phone Samsung Galaxy S21 Huawei M750 AT&T Vista HP Elite x3

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