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Phone Samsung Jitterbug J / SPH-A310 Motorola RIZR Z3 Samsung Wafer R510 Motorola ROKR E2
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 2.1" diag.
4 : 3
? 1.9" diag.
4 : 3
?
Display Resolution & Type 176 x 220 pixels
(~134 ppi)
LCD (Color)
176 x 220 pixels
LCD (TFT/TFD)
220 x 176 pixels
(~148 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery ? 780 mAh 800 mAh ?
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera - 2 megapixel 1 megapixel 1 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - QCIF (176 x 144) ? ?
Front Camera - - - -
Weight 3.99 oz
(113g)
3.92 oz
(111g)
2.47 oz
(70g)
3.77 oz
(107g)
Dimensions 3.87" x 2.16" x 0.97"
(98 x 55 x 24.6 mm)
4.15" x 1.79" x 0.65"
(105 x 45 x 16.5 mm)
4.45" x 1.97" x 0.33"
(113 x 50 x 8.4 mm)
4.17" x 1.95" x 0.71"
(106 x 50 x 18 mm)
Form Factor Clamshell Slide Slab Slab
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

GSM: 900, 1800, 1900

Data Technology - EDGE EVDO r0 EDGE
Features 
GPS / Location Yes - Yes -
Accessibility
Hearing Aid Compatible Yes - Yes -
Multiple Languages - Yes Yes Yes
TTY/TDD (Digital) - Yes Yes -
Alerts
Extra Display Yes - - -
Ringer Profiles - Yes - Yes
Connectivity
Bluetooth Yes Yes Yes Yes
USB - Yes
Mini-USB
- Yes
Contacts
Picture ID - Yes Yes Yes
Ringer ID - Yes - Yes
Voice Dialing Yes Yes 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
Side Keys Yes Yes Yes Yes
Memory
Memory Card Slot - Yes Yes Yes
Messaging
Email Client - Yes * - Yes
EMS / Picture Messaging - Yes - -
Instant Messaging - Yes - -
MMS - Yes Yes Yes
Text Messaging Templates Yes Yes - Yes
Music
FM Radio - - - Yes
Headphone Jack (3.5mm) - - - Yes
Music Player - Yes Yes Yes
Stereo Speakers - - Yes -
Productivity
Alarm - Yes Yes Yes
Calculator - Yes Yes Yes
Calendar - Yes Yes Yes
To-Do List - - - Yes
Voice Memo - Yes Yes Yes
Software
BREW - - Yes -
Games - Yes Yes Yes
Java (J2ME) - Yes - Yes
Voice
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  Samsung Jitterbug J / SPH-A310 Motorola RIZR Z3 Samsung Wafer R510 Motorola ROKR E2
  X > < X > < X > < X

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

 
Phone Samsung Jitterbug J / SPH-A310 Motorola RIZR Z3 Samsung Wafer R510 Motorola ROKR E2

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