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Phone Sony Ericsson Z550a Siemens CX75 Sony Ericsson P910 Nokia 1661
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Not yet released Released Released
Specifications 
Display Size 1.9" diag.
4 : 3
? ? 1.8" diag.
4 : 3
Display Resolution & Type 176 x 220 pixels
(~148 ppi)
LCD (TFT/TFD)
132 x 176 pixels
LCD (TFT/TFD)
208 x 320 pixels
LCD (TFT/TFD)
128 x 160 pixels
(~114 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery ? 750 mAh ? 860 mAh
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera 1 megapixel 1 megapixel Yes -
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? ? QCIF (176 x 144) -
Front Camera - - - -
Weight 3.26 oz
(92g)
3.46 oz
(98g)
5.47 oz
(155g)
2.9 oz
(82g)
Dimensions 3.43" x 1.77" x 0.79"
(87 x 45 x 20.1 mm)
4.33" x 1.88" x 0.74"
(110 x 48 x 18.8 mm)
4.53" x 2.28" x 1.02"
(115 x 58 x 25.9 mm)
4.25" x 1.8" x 0.53"
(108 x 46 x 13.5 mm)
Form Factor Clamshell Slab Flip Slab
Platform / OS (proprietary) (proprietary) UIQ (Symbian) (proprietary)
Network Bands

GSM: 850, 900, 1800, 1900

*

GSM: 900, 1800, 1900

GSM: 850, 1800, 1900

*

GSM: 850, 1900

Data Technology GPRS GPRS GPRS -
Features 
Flashlight - - - Yes
Accessibility
Multiple Languages Yes Yes n/a -
TTY/TDD (Digital) Yes - Yes -
Alerts
Extra Display Yes - - -
Ringer Profiles Yes Yes Yes Yes
Connectivity
Bluetooth Yes Yes
Classic Audio
Yes
Classic Audio
-
Infrared (IR) - Yes Yes -
USB Yes Yes Yes -
Contacts
Picture ID Yes Yes n/a -
Ringer ID Yes Yes n/a -
Voice Dialing Yes - n/a -
Customization
Custom Graphics Yes Yes n/a -
Custom Ringtones Yes Yes n/a -
Real-Music Ringers Yes - n/a -
Data & Network
Data Tethering Yes Yes n/a -
WAP / Web Browser Yes Yes n/a -
Input
Predictive Text Entry Yes Yes n/a Yes
Side Keys Yes Yes Yes -
Text Keyboard, Hardware - - Yes -
Touch Screen - - Yes -
Memory
Memory Card Slot Yes Yes Yes -
Messaging
Email Client Yes Yes n/a -
EMS / Picture Messaging - Yes n/a -
MMS Yes Yes n/a -
Text Messaging Templates Yes - n/a -
Music
FM Radio Yes - - Yes
Music Player Yes Yes n/a -
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 -
Voice
Headset Jack (2.5 mm) - - n/a Yes
Push-To-Talk Yes * Yes - -
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  Sony Ericsson Z550a Siemens CX75 Sony Ericsson P910 Nokia 1661
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Sony Ericsson Z550a Siemens CX75 Sony Ericsson P910 Nokia 1661

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