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Phone Samsung SGH-X640 Palm Treo 600 (CDMA) Samsung Galaxy Note5 (GSM) Samsung Galaxy S6 (GSM) Samsung M520
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? 5.7" diag.
16 : 9
5.1" diag.
16 : 9
2.1" diag.
4 : 3
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
160 x 160 pixels
LCD (Color)
1440 x 2560 pixels
(~515 ppi)
AMOLED
1440 x 2560 pixels
(~576 ppi)
AMOLED
176 x 220 pixels
(~134 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz 60 Hz ?
Battery 800 mAh ? 3,000 mAh 2,550 mAh ?
Processor ? ? 2.1 GHz Samsung Exynos 7420 2.1 GHz Samsung Exynos 7420 ?
RAM ? ? 4 GB 3 GB ?
Storage ? raw hardware ? raw hardware 32 GB * 32 GB * ? raw hardware
Main Camera Yes Yes 16 megapixel 16 megapixel 1 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - - 4K UHD 4K UHD ?
Front Camera - - 5 megapixel 5 megapixel -
Weight 3 oz
(85g)
6.2 oz
(176g)
6.03 oz
(171g)
4.87 oz
(138g)
2.75 oz
(78g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
4.41" x 2.36" x 0.87"
(112 x 60 x 22.1 mm)
6.03" x 3" x 0.3"
(153 x 76 x 7.6 mm)
5.65" x 2.78" x 0.27"
(143 x 71 x 6.8 mm)
4.01" x 2.04" x 0.5"
(102 x 52 x 12.7 mm)
Form Factor Clamshell Slab Slab Slab Slide
Platform / OS (proprietary) Palm OS Android Android (proprietary)
Network Bands

GSM: 900, 1800, 1900

CDMA: 850, 1900

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

WCDMA: 1, 2, 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

*

CDMA: 850, 1900

Data Technology GPRS 1xRTT LTE (Cat 9) LTE (Cat 6) EVDO r0
Features 
Fingerprint Reader - - Yes Yes -
Flashlight - - Yes Yes -
GPS / Location - n/a n/a n/a Yes
VR-ready - - Yes Yes -
Accessibility
Hearing Aid Compatible - - Yes Yes Yes
Multiple Languages Yes n/a n/a n/a Yes
TTY/TDD (Digital) - Yes Yes Yes Yes
Connectivity
Bluetooth -
-
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Infrared (IR) - Yes - Yes -
MirrorLink - - Yes Yes -
NFC - - Yes Yes -
USB - Yes Yes
Micro-USB
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 n/a n/a n/a Yes
Ringer ID Yes n/a n/a n/a Yes
Voice Dialing - n/a n/a n/a Yes
Customization
Custom Graphics Yes n/a n/a n/a Yes
Custom Ringtones Yes n/a n/a n/a Yes
Data & Network
Data Tethering - n/a n/a n/a Yes
WAP / Web Browser Yes n/a n/a n/a Yes
Input
Predictive Text Entry Yes n/a n/a n/a Yes
Side Keys Yes Yes Yes Yes Yes
Stylus - - Yes - -
Text Keyboard, Hardware - Yes - - -
Touch Screen - Yes Yes Yes -
Memory
Memory Card Slot - Yes - - Yes
Messaging
Email Client - n/a n/a n/a -
EMS / Picture Messaging Yes n/a n/a n/a -
MMS Yes n/a n/a n/a -
Text Messaging Templates Yes n/a n/a n/a Yes
Music
Headphone Jack (3.5mm) - - Yes Yes -
Music Player - n/a n/a n/a Yes
Photo & Video
DLNA - - Yes Yes -
Miracast - - - Yes -
TV Output - - Yes Yes -
Power
Fast Charging - - Yes Yes -
Wireless Charging - - Yes Yes -
Productivity
Alarm Yes n/a n/a n/a Yes
Calculator Yes n/a n/a n/a Yes
Calendar Yes n/a n/a n/a Yes
To-Do List Yes n/a n/a n/a Yes
Voice Memo Yes n/a n/a n/a Yes
Software
Games Yes n/a n/a n/a Yes
Java (J2ME) Yes n/a n/a n/a Yes
Voice
HD Voice - - Yes Yes -
Headset Jack (2.5 mm) Yes n/a n/a n/a -
Speaker Phone Yes Yes Yes Yes Yes
  Samsung SGH-X640 Palm Treo 600 (CDMA) Samsung Galaxy Note5 (GSM) Samsung Galaxy S6 (GSM) Samsung M520
  X > < X > < X > < X > < X

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

 
Phone Samsung SGH-X640 Palm Treo 600 (CDMA) Samsung Galaxy Note5 (GSM) Samsung Galaxy S6 (GSM) Samsung M520

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