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Phone Kyocera DuraXTP LG K40 / Harmony 3 Samsung SGH-X660 Nokia Lumia 521 / 520
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 2.4" diag.
4 : 3
5.7" diag.
18 : 9
? 4" diag.
5 : 3
Display Resolution & Type 240 x 320 pixels
(~167 ppi)
LCD (TFT/TFD)
720 x 1440 pixels
(~282 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? ?
Battery 1,500 mAh 3,000 mAh 800 mAh 1,430 mAh
Processor 480 MHz Qualcomm QSC6185 1.8 GHz Qualcomm Snapdragon 450 ? 1 GHz Qualcomm Snapdragon S4 MSM8270
RAM 256 MB 2 GB ? 512 MB
Storage 512 MB 32 GB ? raw hardware 8 GB
Main Camera 5 megapixel 13 megapixel Yes 5 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture QVGA (320 x 240) 1080p HD ? 720p HD
Front Camera - 5 megapixel - -
Weight 5.75 oz
(163g)
5.11 oz
(145g)
2.75 oz
(78g)
4.39 oz
(124g)
Dimensions 4.13" x 2.15" x 0.99"
(105 x 55 x 25.1 mm)
6.02" x 2.83" x 0.32"
(153 x 72 x 8.1 mm)
3.52" x 1.77" x 0.85"
(89 x 45 x 21.6 mm)
4.72" x 2.52" x 0.39"
(120 x 64 x 9.9 mm)
Form Factor Clamshell Slab Clamshell Slab
Platform / OS (proprietary) Android (proprietary) Windows
Network Bands

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 5, 12, 13, 14, 25, 26, 29, 30, 41, 66, 71

WCDMA: 2, 4, 5

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

*

GSM: 900, 1800, 1900

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

Data Technology EVDO rA LTE (Cat 6) GPRS HSPA+ 21
Features 
Fingerprint Reader - Yes
stand-alone
- -
Flashlight Yes Yes - -
GPS / Location Yes n/a - n/a
Ruggedized Yes - - -
Water-Resistant Yes
IPX8 (SCUBA)
- - -
Accessibility
Adjustable Text Size Yes n/a - n/a
Hearing Aid Compatible Yes Yes - Yes
Multiple Languages Yes n/a Yes n/a
TTY/TDD (Digital) Yes Yes - Yes
Alerts
Extra Display Yes - Yes -
Connectivity
Bluetooth Yes Yes - Yes
Infrared (IR) - - Yes -
Mobile Hotspot - n/a - n/a
NFC - Yes * - -
USB Yes
Micro-USB
Yes
Micro-USB
- Yes
Wi-Fi - Yes
5 (802.11 a,ac,b,g,n)
- Yes
Contacts
Picture ID Yes n/a Yes n/a
Ringer ID Yes n/a Yes n/a
Voice Dialing Yes n/a - n/a
Customization
Custom Graphics Yes n/a Yes n/a
Custom Ringtones Yes n/a Yes n/a
Real-Music Ringers Yes n/a Yes n/a
Data & Network
Data Tethering - n/a - n/a
WAP / Web Browser Yes n/a Yes n/a
Input
Predictive Text Entry Yes n/a Yes n/a
Side Keys Yes Yes Yes Yes
Touch Screen - Yes - Yes
Memory
Memory Card Slot Yes Yes - Yes
Messaging
Email Client Yes n/a - n/a
EMS / Picture Messaging - n/a Yes n/a
Instant Messaging - n/a - n/a
MMS Yes n/a Yes n/a
Text Messaging Templates Yes n/a Yes n/a
Music
FM Radio - Yes - -
Headphone Jack (3.5mm) Yes Yes - Yes
Music Player - n/a - n/a
Photo & Video
DLNA - Yes - -
Productivity
Alarm Yes n/a Yes n/a
Calculator Yes n/a Yes n/a
Calendar Yes n/a Yes n/a
To-Do List Yes n/a Yes n/a
Voice Memo Yes n/a Yes n/a
Software
Games Yes n/a Yes n/a
Java (J2ME) - n/a Yes n/a
Voice
HD Voice - Yes - -
Push-To-Talk Yes - - -
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  Kyocera DuraXTP LG K40 / Harmony 3 Samsung SGH-X660 Nokia Lumia 521 / 520
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Phone Kyocera DuraXTP LG K40 / Harmony 3 Samsung SGH-X660 Nokia Lumia 521 / 520

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