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Phone Microsoft Lumia 550 Samsung SGH-X640 Samsung Galaxy S7 Hitachi G1000 Samsung SCH-A990
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 4.7" diag.
16 : 9
? 5.1" diag.
16 : 9
? ?
Display Resolution & Type 720 x 1280 pixels
(~312 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
1440 x 2560 pixels
(~576 ppi)
AMOLED
240 x 320 pixels
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ? ?
Battery 2,100 mAh 800 mAh 3,000 mAh ? 1,000 mAh
Processor 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) ? 2.2 GHz Qualcomm Snapdragon 820 (MSM8996) 400 MHz Intel Xscale ?
RAM 1 GB ? 4 GB ? ?
Storage 8 GB ? raw hardware 32 GB ? raw hardware ? raw hardware
Main Camera 5 megapixel Yes 12 megapixel Yes 3 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture 720p HD - 4K UHD - ?
Front Camera 2 megapixel - 5 megapixel - -
Weight 5.01 oz
(142g)
3 oz
(85g)
5.36 oz
(152g)
8.4 oz
(238g)
4.4 oz
(125g)
Dimensions 5.36" x 2.67" x 0.39"
(136 x 68 x 9.9 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
5.61" x 2.74" x 0.31"
(142 x 70 x 7.9 mm)
5.8" x 3.3" x 0.9"
(147 x 84 x 22.9 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
Form Factor Slab Clamshell Slab Slab Clamshell
Platform / OS Windows (proprietary) Android Windows Mobile Professional (proprietary)
Network Bands

4G LTE: 2, 4, 5, 7, 12, 17

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 18, 19, 20, 25, 26, 29, 30, 40, 41

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

*

CDMA: 1900

CDMA: 850, 1900

Data Technology LTE (Cat 4) GPRS LTE (Cat 9) 1xRTT EVDO r0
Features 
Fingerprint Reader - - Yes - -
Flashlight Yes - Yes - Yes
GPS / Location n/a - n/a n/a Yes
VR-ready - - Yes - -
Water-Resistant - - Yes
IPX8 (SCUBA)
- -
Accessibility
Adjustable Text Size n/a - n/a n/a -
Hearing Aid Compatible Yes
M3, T4 (very tele-coil compatible)
- Yes
M4, T3 (mostly tele-coil compatible)
- Yes
M3 (mostly compatible)
Multiple Languages n/a Yes n/a n/a Yes
TTY/TDD (Digital) Yes - Yes Yes Yes
Alerts
Extra Display - - - - Yes
Connectivity
Bluetooth Yes - Yes - Yes
Infrared (IR) - - - Yes -
MirrorLink - - Yes - -
Mobile Hotspot n/a - n/a n/a -
NFC - - Yes - -
USB Yes
Micro-USB
- Yes
Micro-USB
Yes Yes
Wi-Fi Yes
4 (802.11 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 Yes
Data & Network
Data Tethering n/a - n/a n/a Yes
Dual-SIM - - 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
Capacitive
- Yes
Capacitive
Yes -
Memory
Memory Card Slot Yes - Yes Yes Yes
Messaging
Email Client n/a - n/a n/a -
EMS / Picture Messaging n/a Yes n/a n/a Yes
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 - -
Music Player n/a - n/a n/a Yes
Stereo Speakers - - - - Yes
Photo & Video
DLNA - - Yes - -
Miracast - - Yes - -
TV Output - - - - 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 -
Voice Memo n/a Yes n/a n/a Yes
Software
BREW n/a - n/a n/a Yes
Games n/a Yes n/a n/a Yes
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 -
Speaker Phone Yes Yes Yes Yes Yes
  Microsoft Lumia 550 Samsung SGH-X640 Samsung Galaxy S7 Hitachi G1000 Samsung SCH-A990
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Microsoft Lumia 550 Samsung SGH-X640 Samsung Galaxy S7 Hitachi G1000 Samsung SCH-A990

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