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Phone Samsung SGH-E640 TCL 20 SE NEC 535M Samsung Galaxy Rush Alcatel 665
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Not yet released Released Released
Specifications 
Display Size ? 6.8" diag.
20.5 : 9
? 3.5" diag.
5 : 3
1.8" diag.
4 : 3
Display Resolution & Type 176 x 220 pixels
LCD (TFT/TFD)
720 x 1640 pixels
(~263 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
320 x 480 pixels
(~165 ppi)
LCD (TFT/TFD)
128 x 160 pixels
(~116 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? 60 Hz ?
Battery 800 mAh 5,000 mAh 720 mAh 1,750 mAh 650 mAh
Processor ? 1.6 GHz Qualcomm Snapdragon 460 ? 1 GHz Qualcomm MSM8655 ?
RAM ? 4 GB ? 768 MB 16 MB
Storage ? raw hardware 128 GB ? raw hardware 4 GB 32 MB
Main Camera 1 megapixel 48 megapixel 1 megapixel 3 megapixel 2 megapixel
Wide Camera - 5 megapixel - - -
Tele Camera - - - - -
Video Capture QCIF (176 x 144) 1080p HD QCIF (176 x 144) VGA (640 x 480) QCIF (176 x 144)
Front Camera - 13 megapixel - 1 megapixel -
Weight 3.17 oz
(90g)
7.31 oz
(207g)
4.16 oz
(118g)
4.2 oz
(119g)
2.72 oz
(77g)
Dimensions 3.37" x 1.78" x 0.93"
(86 x 45 x 23.6 mm)
6.78" x 3.04" x 0.35"
(172 x 77 x 8.9 mm)
3.98" x 1.93" x 1.02"
(101 x 49 x 25.9 mm)
4.84" x 2.36" x 0.47"
(123 x 60 x 11.9 mm)
3.78" x 1.89" x 0.66"
(96 x 48 x 16.8 mm)
Form Factor Clamshell Slab Clamshell Slab Clamshell
Platform / OS (proprietary) Android (proprietary) Android (proprietary)
Network Bands

GSM: 900, 1800, 1900

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

GSM: 850, 1800, 1900

CDMA: 1900

GSM: 850, 1900

Data Technology GPRS LTE (Cat 4) GPRS EVDO rA -
Features 
Fingerprint Reader - Yes
stand-alone
- - -
Flashlight - Yes Yes - -
GPS / Location - n/a - n/a -
Accessibility
Adjustable Text Size - n/a - n/a -
Hearing Aid Compatible - Yes - Yes Yes
Multiple Languages Yes n/a Yes n/a Yes
TTY/TDD (Digital) - Yes Yes Yes -
Alerts
Extra Display Yes - Yes - Yes
Ringer Profiles - - Yes - Yes
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
-
Yes
Classic Audio
Yes
Classic Audio
Infrared (IR) - - Yes - -
USB Yes Yes
USB Type C
Yes Yes Yes
Micro-USB
Wi-Fi - Yes
4 (802.11 b,g,n)
- Yes
4 (802.11 a,b,g,n)
-
Contacts
Picture ID Yes n/a Yes n/a Yes
Ringer ID Yes n/a Yes n/a Yes
Voice Dialing - n/a Yes n/a -
Customization
Custom Graphics Yes n/a Yes n/a Yes
Custom Ringtones Yes n/a Yes n/a Yes
Real-Music Ringers Yes n/a - n/a Yes
Data & Network
Data Tethering - n/a Yes n/a -
WAP / Web Browser Yes n/a Yes n/a Yes
Input
Predictive Text Entry Yes n/a Yes n/a Yes
Side Keys Yes Yes Yes Yes Yes
Touch Screen - Yes - Yes -
Memory
Memory Card Slot - Yes - Yes Yes
Messaging
Email Client Yes n/a Yes n/a -
EMS / Picture Messaging Yes n/a - n/a -
Instant Messaging - n/a - n/a Yes
MMS Yes n/a Yes n/a Yes
Text Messaging Templates Yes n/a - n/a Yes
Music
FM Radio - Yes - - Yes
Headphone Jack (3.5mm) - Yes - Yes Yes
Music Player Yes n/a - n/a Yes
Productivity
Alarm Yes n/a Yes n/a Yes
Calculator Yes n/a Yes n/a Yes
Calendar Yes n/a Yes n/a Yes
To-Do List Yes n/a Yes n/a -
Voice Memo Yes n/a Yes n/a Yes
Software
Games Yes n/a Yes n/a Yes
Java (J2ME) Yes n/a Yes n/a Yes
Voice
HD Voice - Yes - - -
Speaker Phone Yes Yes - Yes Yes
  Samsung SGH-E640 TCL 20 SE NEC 535M Samsung Galaxy Rush Alcatel 665
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SGH-E640 TCL 20 SE NEC 535M Samsung Galaxy Rush Alcatel 665

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