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Phone AT&T Vista Samsung SGH-X640 Kyocera DuraForce XD Sony Xperia Z2 Nokia 3250
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Not yet released Released
Specifications 
Display Size 5.5" diag.
18 : 9
? 5.7" diag.
16 : 9
5.2" diag.
16 : 9
?
Display Resolution & Type 720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
720 x 1280 pixels
(~258 ppi)
LCD (TFT/TFD)
1080 x 1920 pixels
(~424 ppi)
LCD (TFT/TFD)
176 x 208 pixels
LCD (TFT/TFD)
Display Refresh 60 Hz ? 60 Hz 60 Hz ?
Battery 2,450 mAh 800 mAh 3,700 mAh 3,200 mAh 1,100 mAh
Processor 2 GHz MediaTek Helio A22 (MT6761V) ? 1.6 GHz Qualcomm Snapdragon 400 (MSM8928) 2.3 GHz Qualcomm Snapdragon 801 MSM8974AB ?
RAM 3 GB ? 2 GB 3 GB ?
Storage 32 GB ? raw hardware 16 GB 16 GB ? raw hardware
Main Camera 8 megapixel Yes 8 megapixel 20 megapixel 2 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture 1080p HD - 1080p HD 4K UHD QCIF (176 x 144)
Front Camera 5 megapixel - 2 megapixel 2 megapixel -
Weight 5.51 oz
(156g)
3 oz
(85g)
10.83 oz
(307g)
5.75 oz
(163g)
4.06 oz
(115g)
Dimensions 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)
6.57" x 3.4" x 0.55"
(167 x 86 x 14 mm)
5.78" x 2.89" x 0.32"
(147 x 73 x 8.2 mm)
4.06" x 1.97" x 0.75"
(103 x 50 x 19.1 mm)
Form Factor Slab Clamshell Slab Slab Slab
Platform / OS Android (proprietary) Android Android S60 (Symbian)
Network Bands

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

WCDMA: 1, 2, 4, 5, 8

GSM: 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 17, 20, 29

WCDMA: 1, 2, 5, 8

GSM: 850, 900, 1800, 1900

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

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

Data Technology LTE (Cat 4) GPRS LTE (Cat 3) LTE (Cat 4) EDGE
Features 
Flashlight Yes - Yes - -
GPS / Location n/a - n/a n/a n/a
Ruggedized - - Yes Yes -
Water-Resistant - - Yes
IPX8 (SCUBA)
Yes
IPX8 (SCUBA)
-
Accessibility
Adjustable Text Size n/a - n/a n/a n/a
Hearing Aid Compatible Yes - Yes - -
Multiple Languages n/a Yes n/a n/a n/a
TTY/TDD (Digital) - - Yes Yes -
Alerts
Ringer Profiles - - - - Yes
Connectivity
Bluetooth Yes - Yes Yes Yes
Mobile Hotspot n/a - n/a n/a n/a
NFC - - Yes Yes -
USB Yes
USB Type C
- Yes
Micro-USB
Yes
Micro-USB
Yes
Wi-Fi Yes - Yes
5 (802.11 a,ac,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID n/a Yes n/a n/a n/a
Ringer ID n/a Yes n/a n/a n/a
Voice Dialing n/a - n/a n/a n/a
Customization
Custom Graphics n/a Yes n/a n/a n/a
Custom Ringtones n/a Yes n/a n/a n/a
Real-Music Ringers n/a - n/a n/a n/a
Data & Network
Data Tethering n/a - n/a n/a n/a
WAP / Web Browser n/a Yes n/a n/a n/a
Input
Predictive Text Entry n/a Yes n/a n/a n/a
Side Keys Yes Yes Yes Yes -
Touch Screen Yes - Yes Yes -
Memory
Memory Card Slot Yes - Yes Yes Yes
Messaging
Email Client n/a - n/a n/a n/a
EMS / Picture Messaging n/a Yes n/a n/a n/a
Instant Messaging n/a - n/a n/a n/a
MMS n/a Yes n/a n/a n/a
Text Messaging Templates n/a Yes n/a n/a n/a
Music
FM Radio - - - Yes Yes
Headphone Jack (3.5mm) Yes - Yes Yes -
Music Player n/a - n/a n/a n/a
Photo & Video
DLNA - - - Yes -
Miracast - - Yes Yes -
TV Output - - - Yes -
Power
Fast Charging - - Yes - -
Productivity
Alarm n/a Yes n/a n/a n/a
Calculator n/a Yes n/a n/a n/a
Calendar n/a Yes n/a n/a n/a
To-Do List n/a Yes n/a n/a n/a
Voice Memo n/a Yes n/a n/a n/a
Software
Games n/a Yes n/a n/a n/a
Java (J2ME) n/a Yes n/a n/a n/a
Voice
HD Voice Yes - Yes - -
Headset Jack (2.5 mm) n/a Yes n/a n/a n/a
Push-To-Talk - - Yes - Yes *
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  AT&T Vista Samsung SGH-X640 Kyocera DuraForce XD Sony Xperia Z2 Nokia 3250
  X > < X > < X > < X > < X

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

 
Phone AT&T Vista Samsung SGH-X640 Kyocera DuraForce XD Sony Xperia Z2 Nokia 3250

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