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Phone Kyocera Echo ZTE Blade Z Max Samsung SGH-X640
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size 3.5" diag.
5 : 3
6" diag.
16 : 9
?
Display Resolution & Type 480 x 800 pixels
(~267 ppi)
LCD (TFT/TFD)
1080 x 1920 pixels
(~367 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh 60 Hz 60 Hz ?
Battery 1,370 mAh 4,080 mAh 800 mAh
Processor 1 GHz Qualcomm Snapdragon S1 QSD8650 1.4 GHz Qualcomm Snapdragon 435 (MSM8940) ?
RAM ? 2 GB ?
Storage ? raw hardware 32 GB ? raw hardware
Main Camera 5 megapixel 16 megapixel Yes
Wide Camera - - -
Tele Camera - - -
Video Capture 720p HD 1080p HD -
Front Camera - 8 megapixel -
Weight 6.8 oz
(193g)
6.58 oz
(186g)
3 oz
(85g)
Dimensions 4.53" x 2.22" x 0.68"
(115 x 56 x 17.2 mm)
6.51" x 3.28" x 0.33"
(165 x 83 x 8.3 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
Form Factor Slab Slab Clamshell
Platform / OS Android Android (proprietary)
Network Bands

CDMA: 850, 1900

4G LTE: 2, 4, 5, 12, 66

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

Data Technology EVDO rA LTE (Cat 6) GPRS
Features 
Fingerprint Reader - Yes
stand-alone
-
Flashlight - Yes -
GPS / Location n/a n/a -
Accessibility
Hearing Aid Compatible Yes
M4, T4 (very tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
-
Multiple Languages n/a n/a Yes
TTY/TDD (Digital) Yes Yes -
Connectivity
Bluetooth Yes Yes -
Mobile Hotspot n/a n/a -
USB Yes Yes
USB Type C
-
Wi-Fi Yes
802.11 b,g
Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID n/a n/a Yes
Ringer ID n/a n/a Yes
Voice Dialing n/a n/a -
Customization
Custom Graphics n/a n/a Yes
Custom Ringtones n/a n/a Yes
Real-Music Ringers n/a n/a -
Data & Network
Data Tethering n/a n/a -
WAP / Web Browser n/a n/a Yes
Input
Predictive Text Entry n/a n/a Yes
Side Keys Yes Yes Yes
Touch Screen Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot Yes Yes -
Messaging
Email Client n/a n/a -
EMS / Picture Messaging n/a n/a Yes
Instant Messaging n/a n/a -
MMS n/a n/a Yes
Text Messaging Templates n/a n/a Yes
Music
FM Radio - Yes -
Headphone Jack (3.5mm) Yes Yes -
Music Player n/a n/a -
Power
Fast Charging - Yes -
Productivity
Alarm n/a n/a Yes
Calculator n/a n/a Yes
Calendar n/a n/a Yes
To-Do List n/a n/a Yes
Voice Memo n/a n/a Yes
Software
Games n/a n/a Yes
Java (J2ME) n/a n/a Yes
Voice
HD Voice - Yes -
Headset Jack (2.5 mm) n/a n/a Yes
Speaker Phone Yes Yes Yes
  Kyocera Echo ZTE Blade Z Max Samsung SGH-X640
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Phone Kyocera Echo ZTE Blade Z Max Samsung SGH-X640

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