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Phone Kyocera DuraForce Pro 3 Samsung Galaxy Z Fold4 Samsung SGH-E640 Samsung Acclaim SCH-R880
Current U.S. Carriers Verizon (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 5.4" diag.
18 : 9
7.6" diag.
4 : 3
? 3.2" diag.
5 : 3
Display Resolution & Type 1080 x 2160 pixels
(~449 ppi)
AMOLED
1812 x 2176 pixels
(~373 ppi)
AMOLED
176 x 220 pixels
LCD (TFT/TFD)
320 x 480 pixels
(~180 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz 120 Hz ? 60 Hz
Battery 4,270 mAh 4,400 mAh 800 mAh 1,500 mAh
Processor 2.4 GHz Snapdragon 7 Gen 1 3.2 GHz Snapdragon 8+ Gen 1 ? 800 MHz ARM-6
RAM 6 GB 12 GB ? ?
Storage 128 GB 256 GB * ? raw hardware ? raw hardware
Main Camera 16 megapixel 50 megapixel 1 megapixel 3 megapixel
Wide Camera 16 megapixel 12 megapixel - -
Tele Camera - 10 megapixel - -
Video Capture 4K UHD 4K UHD QCIF (176 x 144) CIF (352 x 288)
Front Camera 8 megapixel 10 megapixel - -
Weight 8.36 oz
(237g)
9.28 oz
(263g)
3.17 oz
(90g)
4.93 oz
(140g)
Dimensions 6.06" x 2.95" x 0.57"
(154 x 75 x 14.5 mm)
6.11" x 2.64" x 0.62"
(155 x 67 x 15.8 mm)
3.37" x 1.78" x 0.93"
(86 x 45 x 23.6 mm)
4.49" x 2.32" x 0.6"
(114 x 59 x 15.2 mm)
Form Factor Slab Foldable Clamshell Slide
Platform / OS Android Android (proprietary) Android
Network Bands

5G: 2, 5, 48, 66, 77-A, 77-C, 78, 260, 261

4G LTE: 1, 2, 3, 4, 5, 7, 12, 13, 46, 48, 66

WCDMA: 1, 2, 5, 8

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

GSM: 900, 1800, 1900

CDMA: 850, 1900

Data Technology NR (5G) NR (5G) GPRS EVDO rA
Features 
Barometer Yes Yes - -
Fingerprint Reader Yes
stand-alone
Yes
stand-alone
- -
Flashlight Yes Yes - -
GPS / Location n/a n/a - n/a
Ruggedized Yes - - -
Water-Resistant Yes
IPX8 (SCUBA)
Yes
IPX8 (SCUBA)
- -
Accessibility
Hearing Aid Compatible Yes
M4, T4 (very tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
- Yes
M4, T3 (mostly tele-coil compatible)
Multiple Languages n/a n/a Yes n/a
TTY/TDD (Digital) Yes Yes - Yes
Alerts
Extra Display - Yes Yes -
Connectivity
Bluetooth Yes Yes Yes Yes
NFC Yes Yes - -
USB Yes
USB Type C
Yes
USB Type C
Yes Yes
Micro-USB
UWB - Yes - -
Wi-Fi Yes
6E (802.11 a,ac,ax,b,g,n)
Yes
6E (802.11 a,ac,ax,b,g,n)
- Yes
Contacts
Picture ID n/a n/a Yes n/a
Ringer ID n/a n/a Yes n/a
Voice Dialing n/a n/a - n/a
Customization
Custom Graphics n/a n/a Yes n/a
Custom Ringtones n/a n/a Yes n/a
Real-Music Ringers n/a n/a Yes n/a
Data & Network
Dual-SIM Yes Yes - -
WAP / Web Browser n/a n/a Yes n/a
Input
Predictive Text Entry n/a n/a Yes n/a
Side Keys Yes Yes Yes Yes
Stylus - Yes - -
Text Keyboard, Hardware - - - Yes
Touch Screen Yes
Capacitive
Yes
Capacitive
- Yes
Capacitive
Memory
Memory Card Slot Yes - - Yes
Messaging
Email Client n/a n/a Yes n/a
EMS / Picture Messaging n/a n/a Yes n/a
Instant Messaging n/a n/a - n/a
MMS n/a n/a Yes n/a
Text Messaging Templates n/a n/a Yes n/a
Music
Headphone Jack (3.5mm) - - - Yes
Music Player n/a n/a Yes n/a
Stereo Speakers Yes - - -
Photo & Video
Miracast Yes - - -
TV Output - Yes - -
Power
Fast Charging Yes Yes - -
Wireless Charging Yes Yes - -
Productivity
Alarm n/a n/a Yes n/a
Calculator n/a n/a Yes n/a
Calendar n/a n/a Yes n/a
To-Do List n/a n/a Yes n/a
Voice Memo n/a n/a Yes n/a
Software
Games n/a n/a Yes n/a
Java (J2ME) n/a n/a Yes n/a
Voice
HD Voice Yes Yes - -
Push-To-Talk Yes - - -
Speaker Phone Yes Yes Yes Yes
  Kyocera DuraForce Pro 3 Samsung Galaxy Z Fold4 Samsung SGH-E640 Samsung Acclaim SCH-R880
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Kyocera DuraForce Pro 3 Samsung Galaxy Z Fold4 Samsung SGH-E640 Samsung Acclaim SCH-R880

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