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Phone Sony Ericsson Z550a ZTE Speed Kyocera K404 Sony Xperia Z2
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Not yet released
Specifications 
Display Size 1.9" diag.
4 : 3
4.5" diag.
16 : 9
? 5.2" diag.
16 : 9
Display Resolution & Type 176 x 220 pixels
(~148 ppi)
LCD (TFT/TFD)
540 x 960 pixels
(~245 ppi)
LCD (TFT/TFD)
104 x 90 pixels
LCD (STN)
1080 x 1920 pixels
(~424 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? 60 Hz
Battery ? 2,000 mAh 900 mAh 3,200 mAh
Processor ? 1.2 GHz Qualcomm Snapdragon 410 MSM8916 ? 2.3 GHz Qualcomm Snapdragon 801 MSM8974AB
RAM ? 1 GB ? 3 GB
Storage ? raw hardware 8 GB ? raw hardware 16 GB
Main Camera 1 megapixel 5 megapixel - 20 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? 720p HD - 4K UHD
Front Camera - 2 megapixel - 2 megapixel
Weight 3.26 oz
(92g)
4.8 oz
(136g)
3.52 oz
(100g)
5.75 oz
(163g)
Dimensions 3.43" x 1.77" x 0.79"
(87 x 45 x 20.1 mm)
5.3" x 2.6" x 0.4"
(135 x 66 x 10.2 mm)
4.45" x 1.89" x 0.91"
(113 x 48 x 23.1 mm)
5.78" x 2.89" x 0.32"
(147 x 73 x 8.2 mm)
Form Factor Clamshell Slab Slab Slab
Platform / OS (proprietary) Android (proprietary) Android
Network Bands

GSM: 850, 900, 1800, 1900

*

4G LTE: 25, 26, 41

CDMA: 800, 850, 1900

CDMA: 850, 1900

AMPS: 850

4G LTE: 1, 2, 3, 4, 5, 7, 8, 13, 17

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

Data Technology GPRS LTE (Cat 3) 1xRTT LTE (Cat 4)
Features 
Flashlight - - Yes -
GPS / Location - n/a Yes n/a
Ruggedized - - - Yes
Water-Resistant - - - Yes
IPX8 (SCUBA)
Accessibility
Adjustable Text Size - n/a - n/a
Hearing Aid Compatible - Yes
M3, T4 (very tele-coil compatible)
- -
Multiple Languages Yes n/a Yes n/a
TTY/TDD (Digital) Yes Yes Yes Yes
Alerts
Extra Display Yes - - -
Ringer Profiles Yes - - -
Connectivity
Bluetooth Yes Yes - Yes
Mobile Hotspot - n/a - n/a
NFC - - - Yes
USB Yes Yes
Micro-USB
- Yes
Micro-USB
Wi-Fi - Yes
4 (802.11 b,g,n)
- Yes
5 (802.11 a,ac,b,g,n)
Contacts
Picture ID Yes n/a - n/a
Ringer ID Yes n/a - n/a
Voice Dialing Yes n/a Yes n/a
Customization
Changeable Body Plates - - Yes -
Custom Graphics Yes n/a Yes n/a
Custom Ringtones Yes n/a Yes n/a
Real-Music Ringers Yes n/a - n/a
Data & Network
Data Tethering Yes n/a - n/a
WAP / Web Browser Yes n/a - n/a
Input
Predictive Text Entry Yes n/a Yes n/a
Side Keys Yes Yes - Yes
Touch Screen - Yes
Capacitive
- Yes
Capacitive
Memory
Memory Card Slot Yes Yes - Yes
Messaging
Email Client Yes n/a - n/a
EMS / Picture Messaging - n/a Yes n/a
Instant Messaging - n/a - n/a
MMS Yes n/a - n/a
Text Messaging Templates Yes n/a - n/a
Music
FM Radio Yes - - Yes
Headphone Jack (3.5mm) - Yes - Yes
Music Player Yes n/a - n/a
Photo & Video
DLNA - - - Yes
Miracast - - - Yes
TV Output - - - Yes
Productivity
Alarm Yes n/a Yes n/a
Calculator Yes n/a Yes n/a
Calendar Yes n/a Yes n/a
To-Do List Yes n/a - n/a
Voice Memo Yes n/a - n/a
Software
Games Yes n/a Yes * n/a
Java (J2ME) Yes n/a - n/a
Voice
HD Voice - Yes - -
Headset Jack (2.5 mm) - n/a Yes n/a
Push-To-Talk Yes * - - -
Speaker Phone Yes Yes - Yes
  * Some versions only
  Sony Ericsson Z550a ZTE Speed Kyocera K404 Sony Xperia Z2
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Sony Ericsson Z550a ZTE Speed Kyocera K404 Sony Xperia Z2

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