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Phone Cal-Comp EZ Nokia 6155i Samsung SCH-U550 Samsung SCH-A610
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? 2.1" diag.
4 : 3
?
Display Resolution & Type 128 x 128 pixels
LCD (STN)
128 x 160 pixels
LCD (TFT/TFD)
176 x 220 pixels
(~134 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery 800 mAh 1,070 mAh 800 mAh 1,300 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 - sub-QCIF (128 x 96) ? -
Front Camera - - - -
Weight 2.47 oz
(70g)
4.44 oz
(126g)
3.17 oz
(90g)
4.23 oz
(120g)
Dimensions 4.04" x 1.71" x 0.63"
(103 x 43 x 16 mm)
3.41" x 1.79" x 1.02"
(87 x 45 x 25.9 mm)
3.76" x 1.92" x 0.68"
(96 x 49 x 17.3 mm)
3.5" x 1.9" x 0.9"
(89 x 48 x 22.9 mm)
Form Factor Slab Clamshell Clamshell Clamshell
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

CDMA: 850, 1900

Data Technology 1xRTT 1xRTT EVDO r0 1xRTT
Features 
GPS / Location Yes Yes Yes Yes
Accessibility
Hearing Aid Compatible - - Yes
M4, T4 (very tele-coil compatible)
-
Multiple Languages Yes Yes Yes Yes
TTY/TDD (Digital) - Yes - -
Alerts
Extra Display - Yes Yes -
Ringer Profiles - Yes - -
Connectivity
Bluetooth - - Yes -
Infrared (IR) - Yes - -
USB Yes
Mini-USB
Yes - -
Contacts
Picture ID - Yes Yes Yes
Ringer ID - Yes Yes Yes
Voice Dialing - Yes Yes Yes
Customization
Custom Graphics - Yes Yes Yes
Custom Ringtones - Yes Yes Yes
Real-Music Ringers - Yes Yes -
Data & Network
Data Tethering - Yes Yes Yes
WAP / Web Browser - Yes Yes Yes
Input
Predictive Text Entry - Yes Yes Yes
Side Keys - Yes Yes Yes
Memory
Memory Card Slot - - Yes -
Messaging
EMS / Picture Messaging - - Yes Yes
MMS - Yes Yes Yes
Text Messaging Templates Yes Yes Yes Yes
Music
FM Radio - Yes - -
Music Player - - Yes -
Productivity
Alarm Yes Yes Yes Yes
Calculator Yes Yes Yes Yes
Calendar Yes Yes Yes Yes
To-Do List Yes Yes - Yes
Voice Memo Yes * Yes Yes Yes
Software
BREW - Yes * Yes Yes
Games - Yes Yes Yes
Java (J2ME) - Yes * - -
Voice
Headset Jack (2.5 mm) Yes Yes Yes Yes
Push-To-Talk - Yes * - -
Speaker Phone - Yes Yes -
  * Some versions only
  Cal-Comp EZ Nokia 6155i Samsung SCH-U550 Samsung SCH-A610
  X > < X > < X > < X

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

 
Phone Cal-Comp EZ Nokia 6155i Samsung SCH-U550 Samsung SCH-A610

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