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Phone ZTE Agent Samsung Nexus S Samsung SPH-i550 Motorola i580
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Not yet released Released
Specifications 
Display Size 2.4" diag.
4 : 3
4" diag.
5 : 3
? ?
Display Resolution & Type 240 x 320 pixels
(~167 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~233 ppi)
AMOLED
320 x 320 pixels
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? ?
Battery 900 mAh 1,500 mAh ? ?
Processor ? 1 GHz Samsung Hummingbird Cortex A8 200 MHz Motorola MX-1 ?
RAM ? ? ? ?
Storage ? raw hardware 16 GB ? raw hardware ? raw hardware
Main Camera 1 megapixel 5 megapixel 1 megapixel 1 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? WVGA / 480p ? ?
Front Camera - Yes - -
Weight 3.53 oz
(100g)
4.55 oz
(129g)
? 4.9 oz
(139g)
Dimensions 4.3" x 1.9" x 0.6"
(109 x 48 x 15.2 mm)
4.88" x 2.48" x 0.43"
(124 x 63 x 10.9 mm)
3.46" x 2.34" x 1.1"
(88 x 59 x 27.9 mm)
3.68" x 2.2" x 1.2"
(93 x 56 x 30.5 mm)
Form Factor Slab Slab Clamshell Clamshell
Platform / OS (proprietary) Android Palm OS (proprietary)
Network Bands

CDMA: 850, 1700, 1900

WCDMA: 1, 4, 8

GSM: 850, 900, 1800, 1900

*

CDMA: 850, 1900

AMPS: 850

iDEN: 800

Data Technology 1xRTT HSPA 7.2 1xRTT WiDEN
Features 
GPS / Location Yes n/a n/a Yes
Ruggedized - - - Yes
Accessibility
Hearing Aid Compatible Yes Yes - Yes
Multiple Languages Yes n/a n/a Yes
TTY/TDD (Digital) Yes - Yes Yes
Alerts
Extra Display - - Yes Yes
Ringer Profiles - - - Yes
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
- Yes
Classic Audio
Infrared (IR) - - Yes -
Mobile Hotspot - n/a n/a -
NFC - Yes - -
USB Yes
Micro-USB
Yes
Micro-USB
- -
Wi-Fi - Yes
4 (802.11 b,g,n)
- -
Contacts
Picture ID - n/a n/a Yes
Ringer ID Yes n/a n/a Yes
Voice Dialing - n/a n/a Yes
Customization
Custom Graphics Yes n/a n/a Yes
Custom Ringtones Yes n/a n/a Yes
Real-Music Ringers Yes n/a n/a -
Data & Network
Data Tethering - n/a n/a Yes
WAP / Web Browser Yes n/a n/a Yes
Input
Predictive Text Entry Yes n/a n/a Yes
Side Keys Yes Yes Yes Yes
Touch Screen - Yes Yes -
Memory
Memory Card Slot Yes - Yes Yes
Messaging
Email Client Yes n/a n/a -
Instant Messaging Yes n/a n/a -
MMS Yes n/a n/a Yes
Text Messaging Templates Yes n/a n/a Yes
Music
Headphone Jack (3.5mm) Yes Yes - -
Music Player Yes n/a n/a Yes *
Productivity
Alarm Yes n/a n/a -
Calculator Yes n/a n/a Yes *
Calendar Yes n/a n/a Yes
To-Do List - n/a n/a -
Voice Memo Yes n/a n/a Yes
Software
BREW Yes n/a n/a -
Games Yes n/a n/a Yes
Java (J2ME) - 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
  * Some versions only
  ZTE Agent Samsung Nexus S Samsung SPH-i550 Motorola i580
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Phone ZTE Agent Samsung Nexus S Samsung SPH-i550 Motorola i580

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