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Phone Pantech Duo C810 Samsung SGH-X640 Sony Xperia Z2 Samsung Galaxy S6 (GSM) NEC 525
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Not yet released Released Released
Specifications 
Display Size 2.2" diag.
4 : 3
? 5.2" diag.
16 : 9
5.1" diag.
16 : 9
?
Display Resolution & Type 240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
1080 x 1920 pixels
(~424 ppi)
LCD (TFT/TFD)
1440 x 2560 pixels
(~576 ppi)
AMOLED
162 x 216 pixels
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz 60 Hz ?
Battery 1,320 mAh 800 mAh 3,200 mAh 2,550 mAh 800 mAh
Processor ARM 920t PXA27x ? 2.3 GHz Qualcomm Snapdragon 801 MSM8974AB 2.1 GHz Samsung Exynos 7420 ?
RAM ? ? 3 GB 3 GB ?
Storage ? raw hardware ? raw hardware 16 GB 32 GB * ? raw hardware
Main Camera 1 megapixel Yes 20 megapixel 16 megapixel Yes
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture QVGA (320 x 240) - 4K UHD 4K UHD -
Front Camera - - 2 megapixel 5 megapixel -
Weight 3.88 oz
(110g)
3 oz
(85g)
5.75 oz
(163g)
4.87 oz
(138g)
4.03 oz
(114g)
Dimensions 4.01" x 1.97" x 0.78"
(102 x 50 x 19.8 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
5.78" x 2.89" x 0.32"
(147 x 73 x 8.2 mm)
5.65" x 2.78" x 0.27"
(143 x 71 x 6.8 mm)
4.12" x 1.88" x 1.06"
(105 x 48 x 26.9 mm)
Form Factor Slide Clamshell Slab Slab Clamshell
Platform / OS Windows Mobile Standard (proprietary) Android Android (proprietary)
Network Bands

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 13, 17

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 29, 30

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

*

GSM: 850, 900, 1800, 1900

Data Technology HSDPA 1.8 GPRS LTE (Cat 4) LTE (Cat 6) GPRS
Features 
Fingerprint Reader - - - Yes -
Flashlight - - - Yes -
GPS / Location n/a - n/a n/a -
Ruggedized - - Yes - -
VR-ready - - - Yes -
Water-Resistant - - Yes
IPX8 (SCUBA)
- -
Accessibility
Adjustable Text Size n/a - n/a n/a -
Hearing Aid Compatible - - - Yes -
Multiple Languages n/a Yes n/a n/a Yes
TTY/TDD (Digital) - - Yes Yes Yes
Alerts
Extra Display - - - - Yes
Ringer Profiles Yes - - - Yes
Connectivity
Bluetooth Yes - Yes Yes -
Infrared (IR) - - - Yes Yes
MirrorLink - - - Yes -
Mobile Hotspot n/a - n/a n/a -
NFC - - Yes Yes -
USB Yes - Yes
Micro-USB
Yes
Micro-USB
Yes
Wi-Fi - - 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 Yes
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 -
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 Yes
Text Keyboard, Hardware Yes - - - -
Touch Screen - - Yes Yes -
Memory
Memory Card Slot Yes - Yes - -
Messaging
Email Client n/a - n/a n/a Yes
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 -
Music
FM Radio - - Yes - -
Headphone Jack (3.5mm) - - Yes Yes -
Music Player n/a - n/a n/a -
Photo & Video
DLNA - - Yes Yes -
Miracast - - Yes Yes -
TV Output - - Yes Yes -
Power
Fast Charging - - - Yes -
Wireless Charging - - - Yes -
Productivity
Alarm n/a Yes n/a n/a Yes
Calculator n/a Yes n/a n/a Yes
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 Yes
Java (J2ME) n/a Yes n/a n/a Yes
Voice
HD Voice - - - Yes -
Headset Jack (2.5 mm) n/a Yes n/a n/a Yes
Speaker Phone Yes Yes Yes Yes -
  Pantech Duo C810 Samsung SGH-X640 Sony Xperia Z2 Samsung Galaxy S6 (GSM) NEC 525
  X > < X > < X > < X > < X

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

 
Phone Pantech Duo C810 Samsung SGH-X640 Sony Xperia Z2 Samsung Galaxy S6 (GSM) NEC 525

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