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Phone Sony Ericsson K850 Samsung Rugby Smart Motorola Moto z4 Casio G'zOne Boulder Sony Xperia XA1
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 2.2" diag.
4 : 3
3.7" diag.
5 : 3
6.4" diag.
19.5 : 9
2" diag.
4 : 3
5" diag.
16 : 9
Display Resolution & Type 240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~252 ppi)
AMOLED
1080 x 2340 pixels
(~403 ppi)
AMOLED
240 x 320 pixels
(~200 ppi)
LCD (TFT/TFD)
720 x 1280 pixels
(~294 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz 60 Hz ? 60 Hz
Battery ? 1,650 mAh 3,600 mAh 810 mAh 2,300 mAh
Processor ? 1.4 GHz Qualcomm Snapdragon S2 2 GHz Qualcomm Snapdragon 675 ? 2.3 GHz MediaTek Helio P20 (MT6757)
RAM ? 512 MB 4 GB ? 3 GB
Storage ? raw hardware 4 GB 128 GB ? raw hardware 32 GB
Main Camera 5 megapixel 5 megapixel 48 megapixel 1 megapixel 23 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture ? 720p HD 4K UHD ? 1080p HD
Front Camera - 1 megapixel 25 megapixel - 8 megapixel
Weight 4.2 oz
(119g)
4.2 oz
(119g)
6 oz
(170g)
4.9 oz
(139g)
5.04 oz
(143g)
Dimensions 4" x 1.9" x 0.7"
(102 x 48 x 17.8 mm)
4.93" x 2.6" x 0.35"
(125 x 66 x 8.9 mm)
6.22" x 2.96" x 0.29"
(158 x 75 x 7.4 mm)
3.9" x 2" x 0.9"
(99 x 51 x 22.9 mm)
5.71" x 2.64" x 0.31"
(145 x 67 x 8 mm)
Form Factor Slab Slab Slab Clamshell Slab
Platform / OS (proprietary) Android Android (proprietary) Android
Network Bands

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

4G LTE: 2, 3, 4, 5, 7, 12, 13, 20, 25, 26, 28, 29, 30, 38, 41, 66, 71

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

*

CDMA: 850, 1900

4G LTE: 2, 4, 5, 7, 12, 13, 17, 28, 29, 66

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

Data Technology HSDPA 3.6 HSPA+ 21 LTE (Cat 12) EVDO rA LTE (Cat 6)
Features 
Fingerprint Reader - - Yes - -
Flashlight - - Yes Yes Yes
GPS / Location - n/a n/a Yes n/a
Ruggedized - Yes - Yes -
Water-Resistant - Yes Yes Yes -
Accessibility
Hearing Aid Compatible - Yes
M3 (mostly compatible)
Yes
M4, T4 (very tele-coil compatible)
Yes
M4, T4 (very tele-coil compatible)
Yes
M4, T4 (very tele-coil compatible)
Multiple Languages Yes n/a n/a Yes n/a
TTY/TDD (Digital) Yes Yes Yes Yes Yes
Alerts
Extra Display - - - Yes -
Ringer Profiles Yes - - - -
Connectivity
Bluetooth Yes Yes Yes Yes Yes
Mobile Hotspot - n/a n/a - n/a
NFC - - Yes - Yes
USB Yes Yes
Micro-USB
Yes
USB Type C
Yes Yes
USB Type C
Wi-Fi - Yes
4 (802.11 b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
- Yes
4 (802.11 a,b,g,n)
Contacts
Picture ID Yes n/a n/a Yes n/a
Ringer ID Yes n/a n/a Yes n/a
Voice Dialing Yes n/a n/a Yes n/a
Customization
Changeable Body Plates - - - Yes -
Custom Graphics Yes n/a n/a Yes n/a
Custom Ringtones Yes n/a n/a Yes n/a
Real-Music Ringers Yes n/a n/a - n/a
Data & Network
Data Tethering Yes n/a n/a Yes n/a
WAP / Web Browser Yes n/a n/a Yes n/a
Input
Predictive Text Entry Yes n/a n/a Yes n/a
Side Keys Yes Yes Yes Yes Yes
Touch Screen - Yes
Capacitive
Yes
Capacitive
- Yes
Capacitive
Memory
Memory Card Slot Yes Yes Yes Yes Yes
Messaging
Email Client Yes n/a n/a - n/a
EMS / Picture Messaging - n/a n/a Yes n/a
Instant Messaging - n/a n/a - n/a
MMS Yes n/a n/a Yes n/a
Text Messaging Templates Yes n/a n/a Yes n/a
Music
FM Radio Yes - Yes - Yes
Headphone Jack (3.5mm) - Yes Yes - Yes
Music Player Yes n/a n/a Yes n/a
Photo & Video
DLNA - Yes - - -
Miracast - - - - Yes
Video Calling Yes * n/a n/a - n/a
Power
Fast Charging - - Yes - Yes
Productivity
Alarm Yes n/a n/a Yes n/a
Calculator Yes n/a n/a Yes n/a
Calendar Yes n/a n/a Yes n/a
To-Do List Yes n/a n/a - n/a
Voice Memo Yes n/a n/a Yes n/a
Software
BREW - n/a n/a Yes n/a
Games Yes n/a n/a Yes n/a
Java (J2ME) Yes n/a n/a - n/a
Voice
HD Voice - - Yes - -
Push-To-Talk - - - Yes -
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  Sony Ericsson K850 Samsung Rugby Smart Motorola Moto z4 Casio G'zOne Boulder Sony Xperia XA1
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Sony Ericsson K850 Samsung Rugby Smart Motorola Moto z4 Casio G'zOne Boulder Sony Xperia XA1

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