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Phone Samsung SGH-D520 Samsung SGH-X640 ZTE Blade Vantage Alcatel 665
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? 5" diag.
16 : 9
1.8" diag.
4 : 3
Display Resolution & Type 176 x 220 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
480 x 854 pixels
(~196 ppi)
LCD (TFT/TFD)
128 x 160 pixels
(~116 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ?
Battery 800 mAh 800 mAh 2,500 mAh 650 mAh
Processor ? ? 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) ?
RAM ? ? 2 GB 16 MB
Storage ? raw hardware ? raw hardware 16 GB 32 MB
Main Camera 1 megapixel Yes 8 megapixel 2 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture CIF (352 x 288) - 720p HD QCIF (176 x 144)
Front Camera - - 2 megapixel -
Weight 3.32 oz
(94g)
3 oz
(85g)
5.29 oz
(150g)
2.72 oz
(77g)
Dimensions 3.98" x 1.81" x 0.63"
(101 x 46 x 16 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
5.73" x 2.85" x 0.36"
(146 x 72 x 9.2 mm)
3.78" x 1.89" x 0.66"
(96 x 48 x 16.8 mm)
Form Factor Slide Clamshell Slab Clamshell
Platform / OS (proprietary) (proprietary) Android (proprietary)
Network Bands

GSM: 900, 1800, 1900

GSM: 900, 1800, 1900

4G LTE: 2, 4, 5, 13

GSM: 850, 1900

Data Technology GPRS GPRS LTE (Cat 4) -
Features 
Flashlight - - Yes -
Accessibility
Hearing Aid Compatible - - Yes
M4, T4 (very tele-coil compatible)
Yes
M4 (very compatible)
Multiple Languages Yes Yes n/a Yes
TTY/TDD (Digital) - - Yes -
Alerts
Extra Display - - - Yes
Ringer Profiles - - - Yes
Connectivity
Bluetooth Yes - Yes Yes
USB - - Yes
Micro-USB
Yes
Micro-USB
Wi-Fi - - Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID Yes Yes n/a Yes
Ringer ID Yes Yes n/a Yes
Customization
Custom Graphics Yes Yes n/a Yes
Custom Ringtones Yes Yes n/a Yes
Real-Music Ringers - - n/a Yes
Data & Network
Data Tethering Yes - n/a -
External Antenna Jack Yes - n/a -
WAP / Web Browser Yes Yes n/a Yes
Input
Predictive Text Entry Yes Yes n/a Yes
Side Keys Yes Yes Yes Yes
Touch Screen - - Yes
Capacitive
-
Memory
Memory Card Slot - - Yes Yes
Messaging
Email Client Yes - n/a -
EMS / Picture Messaging - Yes n/a -
Instant Messaging - - n/a Yes
MMS Yes Yes n/a Yes
Text Messaging Templates Yes Yes n/a Yes
Music
FM Radio - - - Yes
Headphone Jack (3.5mm) - - Yes Yes
Music Player - - n/a Yes
Productivity
Alarm Yes Yes n/a Yes
Calculator Yes Yes n/a Yes
Calendar Yes Yes n/a Yes
To-Do List Yes Yes n/a -
Voice Memo Yes Yes n/a Yes
Software
Games Yes Yes n/a Yes
Java (J2ME) Yes Yes n/a Yes
Voice
HD Voice - - Yes -
Headset Jack (2.5 mm) - Yes n/a -
Speaker Phone Yes Yes Yes Yes
  Samsung SGH-D520 Samsung SGH-X640 ZTE Blade Vantage Alcatel 665
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SGH-D520 Samsung SGH-X640 ZTE Blade Vantage Alcatel 665

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