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Phone Sony Ericsson J300a Nokia N-Gage ZTE Solar Casio G'zOne Rock ZTE Z221
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? 4.5" diag.
16 : 9
2.1" diag.
4 : 3
2" diag.
4 : 3
Display Resolution & Type 128 x 128 pixels
LCD (STN)
176 x 208 pixels
LCD (Color)
480 x 854 pixels
(~218 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~190 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~200 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ? ?
Battery ? 850 mAh 2,070 mAh 1,150 mAh 900 mAh
Processor ? ? 1.2 GHz Qualcomm Snapdragon 200 MSM8625 ? ?
RAM ? ? 768 MB ? ?
Storage ? raw hardware ? raw hardware 4 GB ? raw hardware 142 MB
Main Camera - - 5 megapixel 2 megapixel Yes
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - - WVGA / 480p ? QCIF (176 x 144)
Front Camera - - - - -
Weight 2.75 oz
(78g)
4.83 oz
(137g)
5.54 oz
(157g)
4.4 oz
(125g)
3.24 oz
(92g)
Dimensions 3.9" x 1.68" x 0.72"
(99 x 43 x 18.3 mm)
5.26" x 2.74" x 0.8"
(134 x 70 x 20.3 mm)
5.24" x 2.6" x 0.39"
(133 x 66 x 9.9 mm)
4.1" x 2" x 0.9"
(104 x 51 x 22.9 mm)
3.76" x 1.92" x 0.73"
(96 x 49 x 18.5 mm)
Form Factor Slab Slab Slab Clamshell Clamshell
Platform / OS (proprietary) S60 (Symbian) Android (proprietary) (proprietary)
Network Bands

GSM: 850, 1900

GSM: 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 1900

CDMA: 850, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

Data Technology GPRS GPRS HSPA 7.2 EVDO rA HSDPA 3.6
Features 
Flashlight - - - Yes -
GPS / Location - n/a n/a Yes Yes
Ruggedized - - - Yes -
Water-Resistant - - - Yes -
Accessibility
Adjustable Text Size - n/a n/a - -
Hearing Aid Compatible - - Yes Yes Yes
Multiple Languages - n/a n/a Yes Yes
TTY/TDD (Digital) Yes - Yes Yes Yes
Alerts
Extra Display - - - Yes Yes
Ringer Profiles Yes Yes - - Yes
Connectivity
Bluetooth - Yes Yes Yes Yes
USB Yes Yes Yes
Micro-USB
Yes Yes
Wi-Fi - - Yes
4 (802.11 b,g,n)
- -
Contacts
Picture ID Yes n/a n/a Yes -
Ringer ID - n/a n/a Yes -
Voice Dialing Yes n/a n/a Yes -
Customization
Changeable Body Plates Yes - - - -
Custom Graphics Yes n/a n/a Yes Yes
Custom Ringtones Yes n/a n/a Yes Yes
Real-Music Ringers - n/a n/a Yes Yes
Data & Network
Data Tethering Yes n/a n/a Yes -
WAP / Web Browser Yes n/a n/a Yes Yes
Input
Predictive Text Entry Yes n/a n/a Yes Yes
Side Keys - - Yes Yes Yes
Touch Screen - - Yes - -
Memory
Memory Card Slot - Yes Yes Yes -
Messaging
Email Client Yes n/a n/a Yes Yes
EMS / Picture Messaging Yes n/a n/a - -
Instant Messaging - n/a n/a Yes Yes
MMS Yes n/a n/a Yes Yes
Text Messaging Templates - n/a n/a Yes Yes
Music
FM Radio - Yes - - -
Headphone Jack (3.5mm) - - Yes - -
Music Player - n/a n/a Yes -
Productivity
Alarm Yes n/a n/a Yes Yes
Calculator Yes n/a n/a Yes Yes
Calendar Yes n/a n/a Yes Yes
To-Do List Yes n/a n/a - -
Voice Memo Yes n/a n/a Yes Yes
Software
BREW - n/a n/a Yes -
Games Yes n/a n/a Yes Yes
Java (J2ME) Yes n/a n/a - Yes
Voice
Headset Jack (2.5 mm) - n/a n/a Yes -
Push-To-Talk - - - Yes -
Speaker Phone Yes Yes Yes Yes Yes
  Sony Ericsson J300a Nokia N-Gage ZTE Solar Casio G'zOne Rock ZTE Z221
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Phone Sony Ericsson J300a Nokia N-Gage ZTE Solar Casio G'zOne Rock ZTE Z221

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