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Phone Kyocera Hydro Life AT&T Vista Samsung SGH-X640
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size 4.5" diag.
16 : 9
5.5" diag.
18 : 9
?
Display Resolution & Type 540 x 960 pixels
(~245 ppi)
LCD (TFT/TFD)
720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh 60 Hz 60 Hz ?
Battery 2,000 mAh 2,450 mAh 800 mAh
Processor 1.2 GHz Qualcomm Snapdragon MSM8212 2 GHz MediaTek Helio A22 (MT6761V) ?
RAM 1.5 GB 3 GB ?
Storage 8 GB 32 GB ? raw hardware
Main Camera 5 megapixel 8 megapixel Yes
Wide Camera - - -
Tele Camera - - -
Video Capture 720p HD 1080p HD -
Front Camera 2 megapixel 5 megapixel -
Weight 4.8 oz
(136g)
5.51 oz
(156g)
3 oz
(85g)
Dimensions 5.19" x 2.57" x 0.43"
(132 x 65 x 10.9 mm)
5.88" x 2.82" x 0.35"
(149 x 72 x 8.9 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

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30

WCDMA: 1, 2, 4, 5, 8

GSM: 900, 1800, 1900

Data Technology HSPA+ 21 LTE (Cat 4) GPRS
Features 
Flashlight Yes Yes -
GPS / Location n/a n/a -
Ruggedized Yes - -
Water-Resistant Yes
IPX7 (snorkeling)
- -
Accessibility
Adjustable Text Size n/a n/a -
Hearing Aid Compatible Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4, T4 (very tele-coil compatible)
-
Multiple Languages n/a n/a Yes
TTY/TDD (Digital) Yes - -
Connectivity
Bluetooth Yes Yes -
Mobile Hotspot n/a n/a -
USB Yes
Micro-USB
Yes
USB Type C
-
Wi-Fi Yes
4 (802.11 b,g,n)
Yes -
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
Headphone Jack (3.5mm) Yes Yes -
Music Player n/a n/a -
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 Hydro Life AT&T Vista Samsung SGH-X640
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Phone Kyocera Hydro Life AT&T Vista Samsung SGH-X640

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