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Phone Samsung Galaxy Ring / Prevail 2 Sony Ericsson K750 / W800 / D750 / W700 Samsung Galaxy S7 edge Alcatel 665 Samsung SGH-X820
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 4" diag.
5 : 3
? 5.5" diag.
16 : 9
1.8" diag.
4 : 3
?
Display Resolution & Type 480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
1440 x 2560 pixels
(~534 ppi)
AMOLED
128 x 160 pixels
(~116 ppi)
LCD (TFT/TFD)
220 x 176 pixels
LCD (TFT/TFD)
Display Refresh 60 Hz ? 60 Hz ? ?
Battery 1,750 mAh 900 mAh 3,600 mAh 650 mAh 650 mAh
Processor 1.4 GHz Qualcomm Snapdragon S2 MSM8655 ? 2.2 GHz Qualcomm Snapdragon 820 (MSM8996) ? ?
RAM 1 GB ? 4 GB 16 MB ?
Storage 4 GB ? raw hardware 32 GB 32 MB ? raw hardware
Main Camera 5 megapixel 2 megapixel 12 megapixel 2 megapixel 2 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture 720p HD ? 4K UHD QCIF (176 x 144) ?
Front Camera 1 megapixel - 5 megapixel - -
Weight 3.4 oz
(96g)
3.49 oz
(99g)
5.54 oz
(157g)
2.72 oz
(77g)
2.33 oz
(66g)
Dimensions 4.83" x 2.48" x 0.47"
(123 x 63 x 11.9 mm)
3.94" x 1.81" x 0.79"
(100 x 46 x 20.1 mm)
5.94" x 2.86" x 0.3"
(151 x 73 x 7.7 mm)
3.78" x 1.89" x 0.66"
(96 x 48 x 16.8 mm)
4.45" x 1.97" x 0.27"
(113 x 50 x 6.9 mm)
Form Factor Slab Slab Slab Clamshell Slab
Platform / OS Android (proprietary) Android (proprietary) (proprietary)
Network Bands

CDMA: 800, 850, 1900

GSM: 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 18, 19, 20, 25, 26, 29, 30, 38, 39, 40, 41

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

*

GSM: 850, 1900

GSM: 900, 1800, 1900

Data Technology EVDO rA GPRS LTE (Cat 9) - EDGE
Features 
Fingerprint Reader - - Yes - -
Flashlight - Yes Yes - -
GPS / Location n/a - n/a - -
VR-ready - - Yes - -
Water-Resistant - - Yes
IPX8 (SCUBA)
- -
Accessibility
Adjustable Text Size n/a - n/a - -
Hearing Aid Compatible Yes
M4 (very compatible)
- Yes
M4, T3 (mostly tele-coil compatible)
Yes
M4 (very compatible)
-
Multiple Languages n/a Yes n/a Yes Yes
TTY/TDD (Digital) Yes Yes Yes - -
Alerts
Extra Display - - - Yes -
Ringer Profiles - Yes - Yes -
Connectivity
Bluetooth Yes Yes Yes Yes Yes
Infrared (IR) - Yes - - -
MirrorLink - - Yes - -
NFC - - Yes - -
USB Yes Yes Yes
Micro-USB
Yes
Micro-USB
Yes
Wi-Fi Yes
4 (802.11 a,b,g,n)
- Yes
5 (802.11 a,ac,b,g,n)
- -
Contacts
Picture ID n/a Yes n/a Yes Yes
Ringer ID n/a Yes n/a Yes Yes
Voice Dialing n/a Yes n/a - -
Customization
Custom Graphics n/a Yes n/a Yes Yes
Custom Ringtones n/a Yes n/a Yes Yes
Real-Music Ringers n/a - n/a Yes Yes
Data & Network
Data Tethering n/a Yes n/a - -
Dual-SIM - - Yes - -
External Antenna Jack n/a - n/a - Yes
WAP / Web Browser n/a Yes n/a Yes Yes
Input
Predictive Text Entry n/a Yes n/a Yes Yes
Side Keys Yes Yes Yes Yes Yes
Touch Screen Yes
Capacitive
- Yes
Capacitive
- -
Memory
Memory Card Slot Yes Yes Yes Yes -
Messaging
Email Client n/a Yes n/a - Yes
EMS / Picture Messaging n/a Yes n/a - Yes
Instant Messaging n/a - n/a Yes -
MMS n/a Yes n/a Yes Yes
Text Messaging Templates n/a Yes n/a Yes Yes
Music
FM Radio - Yes - Yes -
Headphone Jack (3.5mm) Yes - Yes Yes -
Music Player n/a Yes n/a Yes -
Photo & Video
DLNA Yes - Yes - -
Miracast - - Yes - -
TV Output - - - - Yes
Power
Fast Charging - - Yes - -
Wireless Charging - - Yes - -
Productivity
Alarm n/a Yes n/a Yes Yes
Calculator n/a Yes n/a Yes Yes
Calendar n/a Yes n/a Yes Yes
To-Do List n/a Yes n/a - Yes
Voice Memo n/a Yes n/a Yes Yes
Software
Games n/a Yes n/a Yes Yes
Java (J2ME) n/a Yes n/a Yes Yes
Voice
HD Voice - - Yes - -
Speaker Phone Yes Yes Yes Yes Yes
  Samsung Galaxy Ring / Prevail 2 Sony Ericsson K750 / W800 / D750 / W700 Samsung Galaxy S7 edge Alcatel 665 Samsung SGH-X820
  X > < X > < X > < X > < X

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

 
Phone Samsung Galaxy Ring / Prevail 2 Sony Ericsson K750 / W800 / D750 / W700 Samsung Galaxy S7 edge Alcatel 665 Samsung SGH-X820

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