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Phone TCL 20 SE Samsung Galaxy S6 (GSM) Samsung SGH-X640 Samsung Zeal / Alias 2 SCH-U750 Siemens CX75
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Not yet released
Specifications 
Display Size 6.8" diag.
20.5 : 9
5.1" diag.
16 : 9
? 2.6" diag.
4 : 3
?
Display Resolution & Type 720 x 1640 pixels
(~263 ppi)
LCD (TFT/TFD)
1440 x 2560 pixels
(~576 ppi)
AMOLED
128 x 160 pixels
LCD (TFT/TFD)
240 x 320 pixels
(~154 ppi)
LCD (TFT/TFD)
132 x 176 pixels
LCD (TFT/TFD)
Display Refresh 60 Hz 60 Hz ? ? ?
Battery 5,000 mAh 2,550 mAh 800 mAh 880 mAh 750 mAh
Processor 1.6 GHz Qualcomm Snapdragon 460 2.1 GHz Samsung Exynos 7420 ? ? ?
RAM 4 GB 3 GB ? ? ?
Storage 128 GB 32 GB * ? raw hardware ? raw hardware ? raw hardware
Main Camera 48 megapixel 16 megapixel Yes 2 megapixel 1 megapixel
Wide Camera 5 megapixel - - - -
Tele Camera - - - - -
Video Capture 1080p HD 4K UHD - QCIF (176 x 144) ?
Front Camera 13 megapixel 5 megapixel - - -
Weight 7.31 oz
(207g)
4.87 oz
(138g)
3 oz
(85g)
4.34 oz
(123g)
3.46 oz
(98g)
Dimensions 6.78" x 3.04" x 0.35"
(172 x 77 x 8.9 mm)
5.65" x 2.78" x 0.27"
(143 x 71 x 6.8 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
4.01" x 2.04" x 0.67"
(102 x 52 x 17 mm)
4.33" x 1.88" x 0.74"
(110 x 48 x 18.8 mm)
Form Factor Slab Slab Clamshell Clamshell Slab
Platform / OS Android Android (proprietary) (proprietary) (proprietary)
Network Bands

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 26, 28, 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

*

GSM: 900, 1800, 1900

CDMA: 850, 1900

GSM: 900, 1800, 1900

Data Technology LTE (Cat 4) LTE (Cat 6) GPRS EVDO r0 GPRS
Features 
Fingerprint Reader Yes
stand-alone
Yes - - -
Flashlight Yes Yes - - -
GPS / Location n/a n/a - Yes -
VR-ready - Yes - - -
Accessibility
Adjustable Text Size n/a n/a - Yes -
Hearing Aid Compatible Yes
M4, T3 (mostly tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
- Yes
M4 (very compatible)
-
Multiple Languages n/a n/a Yes Yes Yes
TTY/TDD (Digital) Yes Yes - Yes -
Alerts
Extra Display - - - Yes -
Ringer Profiles - - - - Yes
Connectivity
Bluetooth Yes Yes - Yes Yes
Infrared (IR) - Yes - - Yes
MirrorLink - Yes - - -
NFC - Yes - - -
USB Yes
USB Type C
Yes
Micro-USB
- Yes Yes
Wi-Fi Yes
4 (802.11 b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
- - -
Contacts
Picture ID n/a n/a Yes Yes Yes
Ringer ID n/a n/a Yes Yes Yes
Voice Dialing n/a n/a - Yes -
Customization
Custom Graphics n/a n/a Yes Yes Yes
Custom Ringtones n/a n/a Yes Yes Yes
Real-Music Ringers n/a n/a - Yes -
Data & Network
Data Tethering n/a n/a - Yes Yes
WAP / Web Browser n/a n/a Yes Yes Yes
Input
Predictive Text Entry n/a n/a Yes Yes Yes
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - - - Yes -
Touch Screen Yes
Capacitive
Yes
Capacitive
- - -
Memory
Memory Card Slot Yes - - Yes Yes
Messaging
Email Client n/a n/a - Yes Yes
EMS / Picture Messaging n/a n/a Yes - Yes
Instant Messaging n/a n/a - Yes -
MMS n/a n/a Yes Yes Yes
Text Messaging Templates n/a n/a Yes Yes -
Music
FM Radio Yes - - - -
Headphone Jack (3.5mm) Yes Yes - - -
Music Player n/a n/a - Yes Yes
Photo & Video
DLNA - Yes - - -
Miracast - Yes - - -
TV Output - Yes - - -
Power
Fast Charging - Yes - - -
Wireless Charging - Yes - - -
Productivity
Alarm n/a n/a Yes Yes Yes
Calculator n/a n/a Yes Yes Yes
Calendar n/a n/a Yes Yes Yes
To-Do List n/a n/a Yes - Yes
Voice Memo n/a n/a Yes Yes Yes
Software
BREW n/a n/a - Yes -
Games n/a n/a Yes Yes Yes
Java (J2ME) n/a n/a Yes - Yes
Voice
HD Voice Yes Yes - - -
Headset Jack (2.5 mm) n/a n/a Yes Yes -
Push-To-Talk - - - - Yes
Speaker Phone Yes Yes Yes Yes Yes
  TCL 20 SE Samsung Galaxy S6 (GSM) Samsung SGH-X640 Samsung Zeal / Alias 2 SCH-U750 Siemens CX75
  X > < X > < X > < X > < X

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

 
Phone TCL 20 SE Samsung Galaxy S6 (GSM) Samsung SGH-X640 Samsung Zeal / Alias 2 SCH-U750 Siemens CX75

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