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Phone Samsung SGH-X640 Sony Ericsson T68i Sony Xperia XZ1 Samsung Galaxy S6 (GSM) BlackBerry 7750
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? 5.2" diag.
16 : 9
5.1" diag.
16 : 9
?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
101 x 80 pixels
LCD (STN)
1080 x 1920 pixels
(~424 ppi)
LCD (TFT/TFD)
1440 x 2560 pixels
(~576 ppi)
AMOLED
240 x 240 pixels
LCD (Color)
Display Refresh ? ? 60 Hz 60 Hz ?
Battery 800 mAh 700 mAh 2,700 mAh 2,550 mAh ?
Processor ? ? 2.5 GHz Qualcomm Snapdragon 835 (MSM8998) 2.1 GHz Samsung Exynos 7420 ?
RAM ? ? 4 GB 3 GB ?
Storage ? raw hardware ? raw hardware 64 GB 32 GB * ? raw hardware
Main Camera Yes - 19 megapixel 16 megapixel -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - - 4K UHD 4K UHD -
Front Camera - - 13 megapixel 5 megapixel -
Weight 3 oz
(85g)
2.96 oz
(84g)
5.5 oz
(156g)
4.87 oz
(138g)
5.01 oz
(142g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.94" x 1.89" x 0.79"
(100 x 48 x 20.1 mm)
5.82" x 2.89" x 0.29"
(148 x 73 x 7.4 mm)
5.65" x 2.78" x 0.27"
(143 x 71 x 6.8 mm)
4.76" x 3.03" x 0.71"
(121 x 77 x 18 mm)
Form Factor Clamshell Slab Slab Slab Slab
Platform / OS (proprietary) (proprietary) Android Android BlackBerry OS
Network Bands

GSM: 900, 1800, 1900

GSM: 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 29, 40, 41, 66

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 29, 30

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

*

CDMA: 850, 1900

Data Technology GPRS GPRS LTE (Cat 16) LTE (Cat 6) 1xRTT
Features 
Barometer - - Yes - -
Fingerprint Reader - - Yes *
stand-alone
Yes -
Flashlight - - Yes Yes -
GPS / Location - - n/a n/a n/a
VR-ready - - - Yes -
Water-Resistant - - Yes
IPX8 (SCUBA)
- -
Accessibility
Hearing Aid Compatible - - Yes Yes -
Multiple Languages Yes Yes n/a n/a n/a
TTY/TDD (Digital) - - Yes Yes Yes
Alerts
Ringer Profiles - Yes - - Yes
Connectivity
Bluetooth -
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
-
Infrared (IR) - Yes - Yes -
MirrorLink - - - Yes -
NFC - - Yes Yes -
USB - - Yes
USB Type C
Yes
Micro-USB
Yes
Wi-Fi - - Yes
5 (802.11 a,ac,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID Yes Yes n/a n/a n/a
Ringer ID Yes Yes n/a n/a n/a
Voice Dialing - Yes n/a n/a n/a
Customization
Custom Graphics Yes Yes n/a n/a n/a
Custom Ringtones Yes Yes n/a n/a n/a
Data & Network
Data Tethering - Yes n/a n/a n/a
Dual-SIM - - Yes * - -
WAP / Web Browser Yes Yes n/a n/a n/a
Input
Predictive Text Entry Yes Yes n/a n/a n/a
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - - - - Yes
Touch Screen - - Yes Yes -
Memory
Memory Card Slot - - Yes - -
Messaging
Email Client - Yes n/a n/a n/a
EMS / Picture Messaging Yes Yes n/a n/a n/a
MMS Yes Yes n/a n/a n/a
Text Messaging Templates Yes Yes n/a n/a n/a
Music
Headphone Jack (3.5mm) - - Yes Yes -
Stereo Speakers - - Yes - -
Photo & Video
DLNA - - Yes Yes -
Miracast - - Yes Yes -
TV Output - - - Yes -
Power
Fast Charging - - Yes Yes -
Wireless Charging - - - Yes -
Productivity
Alarm Yes Yes n/a n/a n/a
Calculator Yes Yes n/a n/a n/a
Calendar Yes Yes n/a n/a n/a
To-Do List Yes Yes n/a n/a n/a
Voice Memo Yes Yes n/a n/a n/a
Software
Games Yes Yes n/a n/a n/a
Java (J2ME) Yes - n/a n/a n/a
Voice
HD Voice - - Yes Yes -
Headset Jack (2.5 mm) Yes - n/a n/a n/a
Speaker Phone Yes - Yes Yes -
  * Some versions only
  Samsung SGH-X640 Sony Ericsson T68i Sony Xperia XZ1 Samsung Galaxy S6 (GSM) BlackBerry 7750
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SGH-X640 Sony Ericsson T68i Sony Xperia XZ1 Samsung Galaxy S6 (GSM) BlackBerry 7750

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