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Phone Nokia Lumia 521 / 520 Samsung SGH-X640 Samsung Galaxy S6 (CDMA) Kyocera DuraForce Ultra 5G Nokia 7380
Current U.S. Carriers (none) (none) (none) Verizon (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 4" diag.
5 : 3
? 5.1" diag.
16 : 9
5.5" diag.
18 : 9
?
Display Resolution & Type 480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
1440 x 2560 pixels
(~576 ppi)
AMOLED
1080 x 2160 pixels
(~443 ppi)
LCD (TFT/TFD)
208 x 104 pixels
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz 60 Hz ?
Battery 1,430 mAh 800 mAh 2,550 mAh 4,500 mAh 700 mAh
Processor 1 GHz Qualcomm Snapdragon S4 MSM8270 ? 2.1 GHz Samsung Exynos 2.4 GHz Qualcomm Snapdragon 765G ?
RAM 512 MB ? 3 GB 6 GB ?
Storage 8 GB ? raw hardware 32 GB * 128 GB ? raw hardware
Main Camera 5 megapixel Yes 16 megapixel 23 megapixel 2 megapixel
Wide Camera - - - 16 megapixel -
Tele Camera - - - - -
Video Capture 720p HD - 4K UHD 4K UHD QCIF (176 x 144)
Front Camera - - 5 megapixel 8 megapixel -
Weight 4.39 oz
(124g)
3 oz
(85g)
4.87 oz
(138g)
9.81 oz
(278g)
2.82 oz
(80g)
Dimensions 4.72" x 2.52" x 0.39"
(120 x 64 x 9.9 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
5.65" x 2.78" x 0.27"
(143 x 71 x 6.8 mm)
6.5" x 2.95" x 0.63"
(165 x 75 x 16 mm)
4.49" x 1.18" x 0.79"
(114 x 30 x 20.1 mm)
Form Factor Slab Clamshell Slab Slab Slab
Platform / OS Windows (proprietary) Android Android (proprietary)
Network Bands

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

GSM: 900, 1800, 1900

4G LTE: 2, 4, 5, 13

WCDMA: 1, 2, 5, 8

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

*

5G: 2, 5, 66, 260, 261

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

WCDMA: 1, 2, 5, 8

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

Data Technology HSPA+ 21 GPRS LTE (Cat 4) NR (5G) GPRS
Features 
Barometer - - - Yes -
Fingerprint Reader - - Yes Yes
stand-alone
-
Flashlight - - Yes Yes -
GPS / Location n/a - n/a n/a -
Ruggedized - - - Yes -
VR-ready - - Yes - -
Water-Resistant - - - Yes
IPX8 (SCUBA)
-
Accessibility
Hearing Aid Compatible Yes
M3, T4 (very tele-coil compatible)
- Yes
M4, T3 (mostly tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
-
Multiple Languages n/a Yes n/a n/a Yes
TTY/TDD (Digital) Yes - Yes Yes -
Alerts
Ringer Profiles - - - - Yes
Connectivity
Bluetooth Yes - Yes Yes Yes
Infrared (IR) - - Yes - -
MirrorLink - - Yes - -
Mobile Hotspot n/a - n/a n/a -
NFC - - Yes Yes -
USB Yes - Yes
Micro-USB
Yes
USB Type C
-
UWB - - - Yes -
Wi-Fi Yes - Yes
5 (802.11 a,ac,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID n/a Yes n/a n/a Yes
Ringer ID n/a Yes n/a n/a -
Voice Dialing n/a - n/a n/a Yes
Customization
Custom Graphics n/a Yes n/a n/a Yes
Custom Ringtones n/a Yes n/a n/a Yes
Real-Music Ringers n/a - n/a n/a Yes
Data & Network
Data Tethering n/a - n/a n/a Yes
WAP / Web Browser n/a Yes n/a n/a Yes
Input
Predictive Text Entry n/a Yes n/a n/a Yes
Side Keys Yes Yes Yes Yes -
Touch Screen Yes
Capacitive
- Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot Yes - - Yes -
Messaging
Email Client n/a - n/a n/a -
EMS / Picture Messaging n/a Yes n/a n/a Yes
Instant Messaging n/a - n/a n/a -
MMS n/a Yes n/a n/a Yes
Text Messaging Templates n/a Yes n/a n/a Yes
Music
FM Radio - - - - Yes
Headphone Jack (3.5mm) Yes - Yes Yes -
Music Player n/a - n/a n/a -
Photo & Video
DLNA - - Yes - -
Miracast - - Yes - -
TV Output - - Yes - -
Power
Fast Charging - - - Yes -
Wireless Charging - - Yes Yes -
Productivity
Alarm n/a Yes n/a n/a Yes
Calculator n/a Yes n/a n/a -
Calendar n/a Yes n/a n/a Yes
To-Do List n/a Yes n/a n/a Yes
Voice Memo n/a Yes n/a n/a Yes
Software
Games n/a Yes n/a n/a -
Java (J2ME) n/a Yes n/a n/a -
Voice
HD Voice - - Yes Yes -
Headset Jack (2.5 mm) n/a Yes n/a n/a Yes
Push-To-Talk - - - Yes -
Speaker Phone Yes Yes Yes Yes Yes
  Nokia Lumia 521 / 520 Samsung SGH-X640 Samsung Galaxy S6 (CDMA) Kyocera DuraForce Ultra 5G Nokia 7380
  X > < X > < X > < X > < X

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

 
Phone Nokia Lumia 521 / 520 Samsung SGH-X640 Samsung Galaxy S6 (CDMA) Kyocera DuraForce Ultra 5G Nokia 7380

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