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Phone Samsung Galaxy Ring / Prevail 2 Sony Xperia XZ1 Ericsson T66 Samsung Galaxy S6 (GSM) Huawei M835
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 4" diag.
5 : 3
5.2" diag.
16 : 9
? 5.1" diag.
16 : 9
2.8" diag.
4 : 3
Display Resolution & Type 480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
1080 x 1920 pixels
(~424 ppi)
LCD (TFT/TFD)
? 1440 x 2560 pixels
(~576 ppi)
AMOLED
240 x 320 pixels
(~143 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz 60 Hz ? 60 Hz 60 Hz
Battery 1,750 mAh 2,700 mAh ? 2,550 mAh 1,200 mAh
Processor 1.4 GHz Qualcomm Snapdragon S2 MSM8655 2.5 GHz Qualcomm Snapdragon 835 (MSM8998) ? 2.1 GHz Samsung Exynos 7420 528 MHz Qualcomm MSM7625
RAM 1 GB 4 GB ? 3 GB ?
Storage 4 GB 64 GB ? raw hardware 32 GB * ? raw hardware
Main Camera 5 megapixel 19 megapixel - 16 megapixel 3 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture 720p HD 4K UHD - 4K UHD ?
Front Camera 1 megapixel 13 megapixel - 5 megapixel -
Weight 3.4 oz
(96g)
5.5 oz
(156g)
2.08 oz
(59g)
4.87 oz
(138g)
3.88 oz
(110g)
Dimensions 4.83" x 2.48" x 0.47"
(123 x 63 x 11.9 mm)
5.82" x 2.89" x 0.29"
(148 x 73 x 7.4 mm)
3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
5.65" x 2.78" x 0.27"
(143 x 71 x 6.8 mm)
4.09" x 2.15" x 0.53"
(104 x 55 x 13.5 mm)
Form Factor Slab Slab Slab Slab Slab
Platform / OS Android Android (proprietary) Android Android
Network Bands

CDMA: 800, 850, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 29, 40, 41, 66

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

GSM: 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

*

CDMA: 850, 1700, 1900

Data Technology EVDO rA LTE (Cat 16) - LTE (Cat 6) EVDO rA
Features 
Barometer - Yes - - -
Fingerprint Reader - Yes *
stand-alone
- Yes -
Flashlight - Yes - Yes -
GPS / Location n/a n/a - n/a n/a
VR-ready - - - Yes -
Water-Resistant - Yes
IPX8 (SCUBA)
- - -
Accessibility
Adjustable Text Size n/a n/a - n/a n/a
Hearing Aid Compatible Yes Yes - Yes Yes
Multiple Languages n/a n/a Yes n/a n/a
TTY/TDD (Digital) Yes Yes - Yes Yes
Alerts
Ringer Profiles - - Yes - -
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
-
Yes
Classic Audio
Yes
Classic Audio
Infrared (IR) - - - Yes -
MirrorLink - - - Yes -
NFC - Yes - Yes -
USB Yes Yes
USB Type C
- Yes
Micro-USB
Yes
Wi-Fi Yes
4 (802.11 a,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
- Yes
5 (802.11 a,ac,b,g,n)
Yes
4 (802.11 b,g,n)
Contacts
Picture ID n/a n/a - n/a n/a
Ringer ID n/a n/a - n/a n/a
Voice Dialing n/a n/a - n/a n/a
Customization
Custom Graphics n/a n/a Yes n/a n/a
Custom Ringtones n/a n/a Yes n/a n/a
Real-Music Ringers n/a n/a - n/a n/a
Data & Network
Dual-SIM - Yes * - - -
WAP / Web Browser n/a n/a Yes n/a n/a
Input
Predictive Text Entry n/a n/a Yes n/a n/a
Side Keys Yes Yes Yes Yes Yes
Touch Screen Yes Yes - Yes Yes
Memory
Memory Card Slot Yes Yes - - Yes
Messaging
Email Client n/a n/a - n/a n/a
EMS / Picture Messaging n/a n/a Yes n/a n/a
Instant Messaging n/a n/a - n/a n/a
MMS n/a n/a - n/a n/a
Text Messaging Templates n/a n/a Yes n/a n/a
Music
Headphone Jack (3.5mm) Yes Yes - Yes Yes
Music Player n/a n/a - n/a n/a
Stereo Speakers - Yes - - -
Photo & Video
DLNA Yes Yes - Yes -
Miracast - Yes - Yes -
TV Output - - - Yes -
Power
Fast Charging - Yes - Yes -
Wireless Charging - - - Yes -
Productivity
Alarm n/a n/a Yes n/a n/a
Calculator n/a n/a Yes n/a n/a
Calendar n/a n/a Yes n/a n/a
To-Do List n/a n/a Yes n/a n/a
Voice Memo n/a n/a - n/a n/a
Software
Games n/a n/a Yes n/a n/a
Voice
HD Voice - Yes - Yes -
Speaker Phone Yes Yes - Yes Yes
  * Some versions only
  Samsung Galaxy Ring / Prevail 2 Sony Xperia XZ1 Ericsson T66 Samsung Galaxy S6 (GSM) Huawei M835
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung Galaxy Ring / Prevail 2 Sony Xperia XZ1 Ericsson T66 Samsung Galaxy S6 (GSM) Huawei M835

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