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Phone Nokia E75 Samsung SGH-X820 ZTE Z221 Samsung SGH-X640
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 2.4" diag.
4 : 3
? 2" diag.
4 : 3
?
Display Resolution & Type 240 x 320 pixels
(~167 ppi)
LCD (TFT/TFD)
220 x 176 pixels
LCD (TFT/TFD)
240 x 320 pixels
(~200 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery 1,000 mAh 650 mAh 900 mAh 800 mAh
Processor 369 MHz ARM 11 ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware 142 MB ? raw hardware
Main Camera 3 megapixel 2 megapixel Yes Yes
Wide Camera - - - -
Tele Camera - - - -
Video Capture VGA (640 x 480) ? QCIF (176 x 144) -
Front Camera - - - -
Weight 4.9 oz
(139g)
2.33 oz
(66g)
3.24 oz
(92g)
3 oz
(85g)
Dimensions 4.4" x 1.97" x 0.57"
(112 x 50 x 14.4 mm)
4.45" x 1.97" x 0.27"
(113 x 50 x 6.9 mm)
3.76" x 1.92" x 0.73"
(96 x 49 x 18.5 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
Form Factor Slab Slab Clamshell Clamshell
Platform / OS S60 (Symbian) (proprietary) (proprietary) (proprietary)
Network Bands

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

*

GSM: 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

Data Technology HSDPA 3.6 EDGE HSDPA 3.6 GPRS
Features 
GPS / Location n/a - Yes -
Accessibility
Hearing Aid Compatible - - Yes
M3, T3 (mostly tele-coil compatible)
-
Multiple Languages n/a Yes Yes Yes
TTY/TDD (Digital) - - Yes -
Alerts
Extra Display - - Yes -
Ringer Profiles Yes - Yes -
Connectivity
Bluetooth Yes Yes Yes -
USB Yes
Micro-USB
Yes Yes -
Wi-Fi Yes
802.11 b,g
- - -
Contacts
Picture ID n/a Yes - Yes
Ringer ID n/a Yes - Yes
Voice Dialing n/a - - -
Customization
Custom Graphics n/a Yes Yes Yes
Custom Ringtones n/a Yes Yes Yes
Real-Music Ringers n/a Yes Yes -
Data & Network
Data Tethering n/a - - -
External Antenna Jack n/a Yes - -
WAP / Web Browser n/a Yes Yes Yes
Input
Predictive Text Entry n/a Yes Yes Yes
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware Yes - - -
Memory
Memory Card Slot Yes - - -
Messaging
Email Client n/a Yes Yes -
EMS / Picture Messaging n/a Yes - Yes
Instant Messaging n/a - Yes -
MMS n/a Yes Yes Yes
Text Messaging Templates n/a Yes Yes Yes
Music
FM Radio Yes - - -
Headphone Jack (3.5mm) Yes - - -
Music Player n/a - - -
Photo & Video
TV Output - Yes - -
Video Calling n/a - - -
Productivity
Alarm n/a Yes Yes Yes
Calculator n/a Yes Yes Yes
Calendar n/a Yes Yes Yes
To-Do List n/a Yes - Yes
Voice Memo n/a Yes Yes Yes
Software
Games n/a Yes Yes Yes
Java (J2ME) n/a Yes Yes Yes
Voice
Headset Jack (2.5 mm) n/a - - Yes
Push-To-Talk Yes * - - -
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  Nokia E75 Samsung SGH-X820 ZTE Z221 Samsung SGH-X640
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Nokia E75 Samsung SGH-X820 ZTE Z221 Samsung SGH-X640

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