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Phone Samsung Rugby A837 Samsung Galaxy S21 Huawei Mate 10 Pro
Current U.S. Carriers (none) Verizon (none)
Global Availability Released Released Not yet released
Specifications 
Display Size 2" diag.
4 : 3
6.2" diag.
20 : 9
6" diag.
18 : 9
Display Resolution & Type 176 x 220 pixels
(~141 ppi)
LCD (TFT/TFD)
1080 x 2400 pixels
(~424 ppi)
AMOLED
1080 x 2160 pixels
(~402 ppi)
AMOLED
Display Refresh ? 120 Hz 60 Hz
Battery 1,000 mAh 4,000 mAh 4,000 mAh
Processor ? 2.8 GHz Qualcomm Snapdragon 888 2.4 GHz Huawei Kirin 970
RAM ? 8 GB 6 GB *
Storage ? raw hardware 128 GB * 128 GB *
Main Camera 1 megapixel 12 megapixel 12 megapixel
Wide Camera - 12 megapixel -
Tele Camera - 64 megapixel -
Video Capture QCIF (176 x 144) 8K 4K UHD
Front Camera - 10 megapixel 8 megapixel
Weight 4.66 oz
(132g)
6.03 oz
(171g)
6.28 oz
(178g)
Dimensions 3.95" x 2.05" x 0.9"
(100 x 52 x 22.9 mm)
5.97" x 2.8" x 0.31"
(152 x 71 x 7.9 mm)
6.07" x 2.93" x 0.31"
(154 x 75 x 7.9 mm)
Form Factor Clamshell Slab Slab
Platform / OS (proprietary) Android Android
Network Bands

WCDMA: 2, 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

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 38, 40, 41

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

*

Data Technology HSDPA 3.6 NR (5G) LTE (Cat 18)
Features 
Barometer - Yes Yes
Fingerprint Reader - Yes
in-display (ultrasonic)
Yes
stand-alone
Flashlight - Yes Yes
GPS / Location Yes n/a n/a
Ruggedized Yes - -
Water-Resistant - Yes
IPX8 (SCUBA)
Yes
IPX7 (snorkeling)
Accessibility
Hearing Aid Compatible Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
-
Multiple Languages Yes n/a n/a
TTY/TDD (Digital) Yes Yes -
Alerts
Extra Display Yes - -
Connectivity
Bluetooth Yes Yes Yes
Infrared (IR) - - Yes
NFC - Yes Yes
USB Yes Yes
USB Type C
Yes
USB Type C
Wi-Fi - Yes
6 (802.11 a,ac,ax,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
Contacts
Picture ID Yes n/a n/a
Ringer ID Yes n/a n/a
Customization
Custom Graphics Yes n/a n/a
Custom Ringtones Yes n/a n/a
Real-Music Ringers Yes n/a n/a
Data & Network
Data Tethering Yes n/a n/a
Dual-SIM - - Yes *
WAP / Web Browser Yes n/a n/a
Input
Predictive Text Entry Yes n/a n/a
Side Keys Yes Yes Yes
Touch Screen - Yes
Capacitive
Yes
Capacitive
Memory
Memory Card Slot Yes - -
Messaging
Email Client Yes n/a n/a
Instant Messaging Yes n/a n/a
MMS Yes n/a n/a
Text Messaging Templates Yes n/a n/a
Music
Music Player Yes n/a n/a
Stereo Speakers - Yes -
Photo & Video
TV Output - Yes Yes
Power
Fast Charging - Yes Yes
Wireless Charging - Yes -
Productivity
Alarm Yes n/a n/a
Calculator Yes n/a n/a
Calendar Yes n/a n/a
Voice Memo Yes n/a n/a
Software
Games Yes n/a n/a
Java (J2ME) Yes n/a n/a
Voice
HD Voice - Yes Yes
Push-To-Talk Yes - -
Speaker Phone Yes Yes Yes
  * Some versions only
  Samsung Rugby A837 Samsung Galaxy S21 Huawei Mate 10 Pro
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Phone Samsung Rugby A837 Samsung Galaxy S21 Huawei Mate 10 Pro

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