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Phone Kyocera KX12 Samsung MM-A900 / SPH-A900 / Ace Ericsson R278d Sony Xperia XA2 Ultra Samsung Jack i637
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? ? 6" diag.
16 : 9
2.4" diag.
4 : 3
Display Resolution & Type 128 x 128 pixels
LCD (STN)
240 x 320 pixels
LCD (TFT/TFD)
101 x 40 pixels 1080 x 1920 pixels
(~367 ppi)
LCD (TFT/TFD)
320 x 240 pixels
(~167 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? 60 Hz ?
Battery 1,800 mAh ? ? 3,580 mAh 1,480 mAh
Processor ? ? ? Qualcomm Snapdragon 630 ?
RAM ? ? ? 4 GB ?
Storage ? raw hardware ? raw hardware ? raw hardware 32 GB * ? raw hardware
Main Camera - 1 megapixel - 23 megapixel 3 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - ? - 4K UHD ?
Front Camera - - - 16 megapixel -
Weight 4.62 oz
(131g)
3.9 oz
(111g)
9.28 oz
(263g)
7.79 oz
(221g)
3.6 oz
(102g)
Dimensions 4.33" x 1.97" x 1.02"
(110 x 50 x 25.9 mm)
3.86" x 2.01" x 0.57"
(98 x 51 x 14.5 mm)
5.1" x 2" x 1"
(130 x 51 x 25.4 mm)
6.42" x 3.15" x 0.37"
(163 x 80 x 9.5 mm)
4.4" x 2.4" x 0.5"
(112 x 61 x 12.7 mm)
Form Factor Slab Clamshell Slab Slab Slab
Platform / OS (proprietary) (proprietary) (proprietary) Android Windows Mobile Standard
Network Bands

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

TDMA: 850, 1900

AMPS: 850

4G LTE: 1, 2, 4, 5, 7, 8, 12, 13, 17, 25, 28, 29, 66

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

Data Technology 1xRTT EVDO r0 - LTE (Cat 13) HSDPA 3.6
Features 
Fingerprint Reader - - - Yes
stand-alone
-
Flashlight Yes - - Yes -
GPS / Location Yes Yes - n/a n/a
Ruggedized Yes - - - -
Accessibility
Hearing Aid Compatible - - - Yes
M3, T4 (very tele-coil compatible)
Yes
M3 (mostly compatible)
Multiple Languages Yes Yes Yes n/a n/a
TTY/TDD (Digital) Yes Yes - - -
Alerts
Extra Display - Yes - - -
Ringer Profiles - - Yes - Yes
Connectivity
Bluetooth - Yes - Yes Yes
NFC - - - Yes -
USB - Yes - Yes
USB Type C
Yes
Wi-Fi - - - Yes
5 (802.11 a,ac,b,g,n)
Yes
802.11 b,g
Contacts
Picture ID Yes Yes - n/a n/a
Ringer ID Yes Yes - n/a n/a
Voice Dialing Yes Yes - n/a n/a
Customization
Custom Graphics Yes Yes - n/a n/a
Custom Ringtones Yes Yes Yes n/a n/a
Real-Music Ringers - - - n/a n/a
Data & Network
Data Tethering Yes Yes Yes n/a n/a
WAP / Web Browser Yes Yes Yes n/a n/a
Input
Predictive Text Entry Yes Yes Yes n/a n/a
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - - - - Yes
Touch Screen - - - Yes
Capacitive
-
Memory
Memory Card Slot - - - Yes Yes
Messaging
Email Client - - - n/a n/a
EMS / Picture Messaging Yes - - n/a n/a
Instant Messaging - - - n/a n/a
MMS - - - n/a n/a
Text Messaging Templates Yes Yes - n/a n/a
Music
FM Radio - - - Yes -
Headphone Jack (3.5mm) - - - Yes -
Music Player - Yes - n/a n/a
Photo & Video
Miracast - - - Yes -
Power
Fast Charging - - - Yes -
Productivity
Alarm Yes Yes Yes n/a n/a
Calculator Yes Yes - n/a n/a
Calendar Yes Yes - n/a n/a
To-Do List - Yes - n/a n/a
Voice Memo Yes Yes - n/a n/a
Software
BREW Yes * - - n/a n/a
Games Yes Yes - n/a n/a
Java (J2ME) - Yes - n/a n/a
Voice
Headset Jack (2.5 mm) Yes Yes - n/a n/a
Push-To-Talk Yes - - - -
Speaker Phone Yes Yes - Yes Yes
  * Some versions only
  Kyocera KX12 Samsung MM-A900 / SPH-A900 / Ace Ericsson R278d Sony Xperia XA2 Ultra Samsung Jack i637
  X > < X > < X > < X > < X

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

 
Phone Kyocera KX12 Samsung MM-A900 / SPH-A900 / Ace Ericsson R278d Sony Xperia XA2 Ultra Samsung Jack i637

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