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Phone Samsung SGH-X640 Samsung SCH-A610 BlackBerry 7750 Sony Xperia Pro Samsung Galaxy S6 (GSM)
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? ? 6.5" diag.
21 : 9
5.1" diag.
16 : 9
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
240 x 240 pixels
LCD (Color)
1644 x 3840 pixels
(~643 ppi)
AMOLED
1440 x 2560 pixels
(~576 ppi)
AMOLED
Display Refresh ? ? ? 60 Hz 60 Hz
Battery 800 mAh 1,300 mAh ? 4,000 mAh 2,550 mAh
Processor ? ? ? Qualcomm Snapdragon 865 2.1 GHz Samsung Exynos 7420
RAM ? ? ? 12 GB 3 GB
Storage ? raw hardware ? raw hardware ? raw hardware 512 GB 32 GB *
Main Camera Yes Yes - 12 megapixel 16 megapixel
Wide Camera - - - 12 megapixel -
Tele Camera - - - 12 megapixel -
Video Capture - - - 4K UHD 4K UHD
Front Camera - - - 8 megapixel 5 megapixel
Weight 3 oz
(85g)
4.23 oz
(120g)
5.01 oz
(142g)
7.94 oz
(225g)
4.87 oz
(138g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.5" x 1.9" x 0.9"
(89 x 48 x 22.9 mm)
4.76" x 3.03" x 0.71"
(121 x 77 x 18 mm)
6.7" x 3" x 0.4"
(170 x 76 x 10.2 mm)
5.65" x 2.78" x 0.27"
(143 x 71 x 6.8 mm)
Form Factor Clamshell Clamshell Slab Slab Slab
Platform / OS (proprietary) (proprietary) BlackBerry OS Android Android
Network Bands

GSM: 900, 1800, 1900

CDMA: 850, 1900

CDMA: 850, 1900

5G: 2, 5, 66, 260, 261

4G LTE: 2, 4, 5, 7, 12, 13, 25, 26, 41, 48, 66

WCDMA: 2, 4, 5

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

*

Data Technology GPRS 1xRTT 1xRTT NR (5G) LTE (Cat 6)
Features 
Fingerprint Reader - - - Yes
stand-alone
Yes
Flashlight - - - Yes Yes
GPS / Location - Yes n/a n/a n/a
VR-ready - - - - Yes
Water-Resistant - - - Yes
IPX8 (SCUBA)
-
Accessibility
Hearing Aid Compatible - - - Yes
M4, T4 (very tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Multiple Languages Yes Yes n/a n/a n/a
TTY/TDD (Digital) - - Yes Yes Yes
Alerts
Ringer Profiles - - Yes - -
Connectivity
Bluetooth - - - Yes Yes
Infrared (IR) - - - - Yes
MirrorLink - - - - Yes
NFC - - - Yes Yes
USB - - Yes Yes
USB Type C
Yes
Micro-USB
Wi-Fi - - - Yes
6 (802.11 a,ac,ax,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
Capacitive
Yes
Capacitive
Memory
Memory Card Slot - - - Yes -
Messaging
Email Client - - 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
Miracast - - - - Yes
TV Output - - - Yes 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
BREW - Yes n/a n/a n/a
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 Yes n/a n/a n/a
Speaker Phone Yes - - Yes Yes
  Samsung SGH-X640 Samsung SCH-A610 BlackBerry 7750 Sony Xperia Pro Samsung Galaxy S6 (GSM)
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SGH-X640 Samsung SCH-A610 BlackBerry 7750 Sony Xperia Pro Samsung Galaxy S6 (GSM)

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