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Phone ZTE Savvy Motorola EM330 / EM28 Motorola i450 / i455 Samsung SPH-N270 (Matrix Phone) Sony Ericsson Z550a
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 4" diag.
5 : 3
1.8" diag.
4 : 3
? ? 1.9" diag.
4 : 3
Display Resolution & Type 480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
128 x 160 pixels
(~114 ppi)
LCD (TFT/TFD)
130 x 130 pixels
LCD (STN)
128 x 160 pixels
LCD (TFT/TFD)
176 x 220 pixels
(~148 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz ? ? ? ?
Battery 1,650 mAh 940 mAh ? 1,000 mAh ?
Processor 1 GHz Qualcomm MSM8625 ? ? ? ?
RAM 768 MB ? ? ? ?
Storage 4 GB ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera 5 megapixel 1 megapixel - - 1 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture WVGA / 480p ? - - ?
Front Camera - - - - -
Weight 4.43 oz
(126g)
3.17 oz
(90g)
4.5 oz
(128g)
4.66 oz
(132g)
3.26 oz
(92g)
Dimensions 4.96" x 2.55" x 0.42"
(126 x 65 x 10.7 mm)
3.71" x 1.95" x 0.68"
(94 x 50 x 17.4 mm)
3.5" x 2" x 1.1"
(89 x 51 x 27.9 mm)
4.53" x 2.28" x 0.79"
(115 x 58 x 20.1 mm)
3.43" x 1.77" x 0.79"
(87 x 45 x 20.1 mm)
Form Factor Slab Clamshell Clamshell Slide Clamshell
Platform / OS Android (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

GSM: 850, 1800, 1900

*

iDEN: 800

CDMA: 850, 1900

AMPS: 850

GSM: 850, 900, 1800, 1900

*

Data Technology EVDO rA EDGE - - GPRS
Features 
Flashlight Yes - - - -
GPS / Location n/a - Yes Yes -
Accessibility
Adjustable Text Size n/a - - - -
Hearing Aid Compatible Yes
M4, T4 (very tele-coil compatible)
Yes
M3 (mostly compatible)
Yes
M3 (mostly compatible)
- -
Multiple Languages n/a Yes Yes Yes Yes
TTY/TDD (Digital) Yes Yes Yes - Yes
Alerts
Extra Display - Yes Yes - Yes
Ringer Profiles - - Yes - Yes
Connectivity
Bluetooth Yes Yes - - Yes
USB Yes
Micro-USB
Yes
Mini-USB
Yes - Yes
Wi-Fi Yes
4 (802.11 b,g,n)
- - - -
Contacts
Picture ID n/a - Yes Yes Yes
Ringer ID n/a - Yes Yes Yes
Voice Dialing n/a - Yes Yes Yes
Customization
Custom Graphics n/a Yes Yes - Yes
Custom Ringtones n/a Yes Yes - Yes
Real-Music Ringers n/a Yes Yes * - Yes
Data & Network
Data Tethering n/a - Yes - Yes
WAP / Web Browser n/a Yes Yes - Yes
Input
Predictive Text Entry n/a Yes Yes Yes Yes
Side Keys Yes Yes Yes - Yes
Touch Screen Yes
Capacitive
- - - -
Memory
Memory Card Slot Yes Yes - - Yes
Messaging
Email Client n/a - - - Yes
EMS / Picture Messaging n/a Yes - - -
Instant Messaging n/a - - - -
MMS n/a Yes Yes - Yes
Text Messaging Templates n/a Yes Yes - Yes
Music
FM Radio - Yes - - Yes
Headphone Jack (3.5mm) Yes Yes - - -
Music Player n/a Yes - - Yes
Photo & Video
DLNA Yes - - - -
Productivity
Alarm n/a Yes - Yes Yes
Calculator n/a Yes - Yes Yes
Calendar n/a Yes Yes Yes Yes
To-Do List n/a - - Yes Yes
Voice Memo n/a - Yes Yes Yes
Software
Games n/a Yes Yes - Yes
Java (J2ME) n/a Yes Yes - Yes
Voice
Headset Jack (2.5 mm) n/a - Yes Yes -
Push-To-Talk - - Yes - Yes *
Speaker Phone Yes Yes Yes - Yes
  * Some versions only
  ZTE Savvy Motorola EM330 / EM28 Motorola i450 / i455 Samsung SPH-N270 (Matrix Phone) Sony Ericsson Z550a
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone ZTE Savvy Motorola EM330 / EM28 Motorola i450 / i455 Samsung SPH-N270 (Matrix Phone) Sony Ericsson Z550a

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