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Phone Nokia 1661 Sony Ericsson K850 Samsung DoubleTime NEC 525
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
3.2" diag.
5 : 3
?
Display Resolution & Type 128 x 160 pixels
(~114 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
320 x 480 pixels
(~180 ppi)
LCD (TFT/TFD)
162 x 216 pixels
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ?
Battery 860 mAh ? 1,200 mAh 800 mAh
Processor ? ? 600 MHz Qualcomm ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera - 5 megapixel 3 megapixel Yes
Wide Camera - - - -
Tele Camera - - - -
Video Capture - ? QVGA (320 x 240) -
Front Camera - - - -
Weight 2.9 oz
(82g)
4.2 oz
(119g)
5.22 oz
(148g)
4.03 oz
(114g)
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)
4.45" x 2.44" x 0.59"
(113 x 62 x 15 mm)
4.12" x 1.88" x 1.06"
(105 x 48 x 26.9 mm)
Form Factor Slab Slab Clamshell Clamshell
Platform / OS (proprietary) (proprietary) Android (proprietary)
Network Bands

GSM: 850, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

GSM: 850, 900, 1800, 1900

Data Technology - HSDPA 3.6 HSPA 7.2 GPRS
Features 
Flashlight Yes - - -
GPS / Location - - n/a -
Accessibility
Hearing Aid Compatible - - Yes -
Multiple Languages - Yes n/a Yes
TTY/TDD (Digital) - Yes Yes Yes
Alerts
Extra Display - - - Yes
Ringer Profiles Yes Yes - Yes
Connectivity
Bluetooth -
Yes
Classic Audio
Yes
Classic Audio
-
Infrared (IR) - - - Yes
Mobile Hotspot - - n/a -
USB - Yes Yes
Micro-USB
Yes
Wi-Fi - - Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID - Yes n/a Yes
Ringer ID - Yes n/a Yes
Voice Dialing - Yes n/a Yes
Customization
Custom Graphics - Yes n/a Yes
Custom Ringtones - Yes n/a Yes
Real-Music Ringers - Yes n/a -
Data & Network
Data Tethering - Yes n/a Yes
WAP / Web Browser - Yes n/a Yes
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 -
Messaging
Email Client - Yes n/a Yes
EMS / Picture Messaging - - n/a Yes
Instant Messaging - - n/a -
MMS - Yes n/a Yes
Text Messaging Templates - Yes n/a -
Music
FM Radio Yes Yes - -
Headphone Jack (3.5mm) - - Yes -
Music Player - Yes n/a -
Photo & Video
Video Calling - 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 n/a Yes
Voice Memo Yes Yes n/a Yes
Software
Games Yes Yes n/a Yes
Java (J2ME) - Yes n/a Yes
Voice
Headset Jack (2.5 mm) Yes - n/a Yes
Speaker Phone Yes Yes Yes -
  * Some versions only
  Nokia 1661 Sony Ericsson K850 Samsung DoubleTime NEC 525
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Phone Nokia 1661 Sony Ericsson K850 Samsung DoubleTime NEC 525

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