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Phone Nokia 1661 Sony Ericsson K850 Motorola i576 / i576s Ericsson T66
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 1.8" diag.
4 : 3
2.2" diag.
4 : 3
? ?
Display Resolution & Type 128 x 160 pixels
(~114 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
?
Display Refresh ? ? ? ?
Battery 860 mAh ? ? ?
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera - 5 megapixel - -
Wide Camera - - - -
Tele Camera - - - -
Video Capture - ? - -
Front Camera - - - -
Weight 2.9 oz
(82g)
4.2 oz
(119g)
4.2 oz
(119g)
2.08 oz
(59g)
Dimensions 4.25" x 1.8" x 0.53"
(108 x 46 x 13.5 mm)
4" x 1.9" x 0.7"
(102 x 48 x 17.8 mm)
4.3" x 1.8" x 1"
(109 x 46 x 25.4 mm)
3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
Form Factor Slab Slab Clamshell Slab
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 850, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

iDEN: 800

GSM: 900, 1800, 1900

Data Technology - HSDPA 3.6 WiDEN -
Features 
Flashlight Yes - - -
GPS / Location - - Yes -
Ruggedized - - Yes -
Accessibility
Adjustable Text Size - - Yes -
Hearing Aid Compatible - - Yes -
Multiple Languages - Yes Yes Yes
TTY/TDD (Digital) - Yes Yes -
Alerts
Extra Display - - Yes -
Ringer Profiles Yes Yes - Yes
Connectivity
Bluetooth -
Yes
Classic Audio
Yes
Classic Audio
-
USB - Yes Yes
Micro-USB
-
Contacts
Picture ID - Yes - -
Ringer ID - Yes Yes -
Voice Dialing - Yes Yes -
Customization
Custom Graphics - Yes Yes Yes
Custom Ringtones - Yes Yes Yes
Real-Music Ringers - Yes - -
Data & Network
Data Tethering - Yes Yes -
WAP / Web Browser - Yes Yes Yes
Input
Predictive Text Entry Yes Yes Yes Yes
Side Keys - Yes Yes Yes
Memory
Memory Card Slot - Yes - -
Messaging
Email Client - Yes - -
EMS / Picture Messaging - - - Yes
MMS - Yes Yes -
Text Messaging Templates - Yes Yes Yes
Music
FM Radio Yes Yes - -
Music Player - Yes - -
Photo & Video
Video Calling - Yes * - -
Productivity
Alarm Yes Yes - Yes
Calculator Yes Yes - Yes
Calendar Yes Yes Yes Yes
To-Do List - Yes - Yes
Voice Memo Yes Yes Yes -
Software
Games Yes Yes Yes Yes
Java (J2ME) - Yes Yes -
Voice
Headset Jack (2.5 mm) Yes - Yes -
Push-To-Talk - - Yes -
Speaker Phone Yes Yes Yes -
  * Some versions only
  Nokia 1661 Sony Ericsson K850 Motorola i576 / i576s Ericsson T66
  X > < X > < X > < X

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

 
Phone Nokia 1661 Sony Ericsson K850 Motorola i576 / i576s Ericsson T66

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