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Phone LG K20 / Harmony / Grace Siemens SX66 / MDA III / PDA2K (HTC Blue Angel) Amazon Fire LG Stylo 4
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 5.3" diag.
16 : 9
? 4.7" diag.
16 : 9
6.2" diag.
18 : 9
Display Resolution & Type 720 x 1280 pixels
(~277 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
720 x 1280 pixels
(~312 ppi)
LCD (TFT/TFD)
1080 x 2160 pixels
(~390 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz ? ? 60 Hz
Battery 2,800 mAh 1,490 mAh 2,400 mAh 3,300 mAh
Processor 1.4 GHz Qualcomm Snapdragon 425 (MSM8917) 400 MHz Intel XScale 2.2 GHz Qualcomm Snapdragon 800 1.8 GHz Qualcomm Snapdragon 450
RAM 1.5 GB ? 2 GB 2 GB *
Storage 16 GB ? raw hardware 32 GB * 32 GB *
Main Camera 8 megapixel Yes 13 megapixel 13 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture 1080p HD QCIF (176 x 144) 1080p HD 1080p HD
Front Camera 5 megapixel - 2 megapixel 5 megapixel
Weight 5 oz
(142g)
7.41 oz
(210g)
5.64 oz
(160g)
6.07 oz
(172g)
Dimensions 5.9" x 3" x 0.3"
(150 x 76 x 7.6 mm)
4.92" x 2.83" x 0.75"
(125 x 72 x 19.1 mm)
5.5" x 2.6" x 0.35"
(140 x 66 x 8.9 mm)
6.31" x 3.06" x 0.33"
(160 x 78 x 8.4 mm)
Form Factor Slab Slide Slab Slab
Platform / OS Android Windows Mobile Professional (proprietary) Android
Network Bands

4G LTE: 2, 4, 5, 12

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

GSM: 850, 900, 1800, 1900

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

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 12, 13, 14, 20, 29, 30, 38, 41, 66, 71

WCDMA: 1, 2, 4, 5

GSM: 850, 900, 1800, 1900

*

Data Technology LTE (Cat 4) GPRS LTE (Cat 4) LTE (Cat 6)
Features 
Fingerprint Reader - - - Yes
stand-alone
Flashlight Yes - Yes Yes
GPS / Location n/a n/a Yes n/a
Accessibility
Hearing Aid Compatible Yes - Yes Yes
Multiple Languages n/a n/a Yes n/a
TTY/TDD (Digital) Yes - Yes Yes
Connectivity
Bluetooth Yes
Classic Audio
Yes Yes
Classic Audio
Yes
Classic Audio
Infrared (IR) - Yes - -
Mobile Hotspot n/a n/a Yes n/a
NFC Yes * - Yes Yes *
USB Yes
Micro-USB
Yes Yes
Micro-USB
Yes
USB Type C
Wi-Fi Yes
4 (802.11 b,g,n)
Yes Yes
5 (802.11 a,ac,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
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 Yes n/a
Customization
Custom Graphics n/a n/a - n/a
Custom Ringtones n/a n/a Yes n/a
Data & Network
Data Tethering n/a n/a Yes n/a
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 Yes Yes Yes
Memory
Memory Card Slot Yes Yes - Yes
Messaging
Email Client n/a n/a Yes n/a
MMS n/a n/a Yes n/a
Text Messaging Templates n/a n/a Yes n/a
Music
FM Radio Yes - - Yes
Headphone Jack (3.5mm) Yes - Yes Yes
Music Player n/a n/a Yes n/a
Stereo Speakers - - Yes -
Photo & Video
DLNA - - - Yes
Miracast - - Yes -
TV Output - - 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 - 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 - n/a
Voice
HD Voice Yes - Yes Yes
Headset Jack (2.5 mm) n/a n/a - n/a
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  LG K20 / Harmony / Grace Siemens SX66 / MDA III / PDA2K (HTC Blue Angel) Amazon Fire LG Stylo 4
  X > < X > < X > < X

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

 
Phone LG K20 / Harmony / Grace Siemens SX66 / MDA III / PDA2K (HTC Blue Angel) Amazon Fire LG Stylo 4

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