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Phone ZTE Render Samsung SPH-i550 Ericsson T28 World Samsung SCH-i830 / IP-830w
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Not yet released Released Released
Specifications 
Display Size 4" diag.
5 : 3
? ? ?
Display Resolution & Type 480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
320 x 320 pixels
LCD (TFT/TFD)
? 240 x 320 pixels
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery 1,600 mAh ? 500 mAh ?
Processor 1 GHz Qualcomm MSM7627A 200 MHz Motorola MX-1 ? 520 MHz Intel Bulverde
RAM 1 GB ? ? ?
Storage 4 GB ? raw hardware ? raw hardware ? raw hardware
Main Camera 5 megapixel 1 megapixel - -
Wide Camera - - - -
Tele Camera - - - -
Video Capture VGA (640 x 480) ? - -
Front Camera - - - -
Weight 4.8 oz
(136g)
? 3.14 oz
(89g)
6.44 oz
(183g)
Dimensions 4.8" x 2.52" x 0.48"
(122 x 64 x 12.2 mm)
3.46" x 2.34" x 1.1"
(88 x 59 x 27.9 mm)
3.9" x 2" x 0.6"
(99 x 51 x 15.2 mm)
4.49" x 2.28" x 0.97"
(114 x 58 x 24.6 mm)
Form Factor Slab Clamshell Flip Slide
Platform / OS Windows Palm OS (proprietary) Windows Mobile Professional
Network Bands

CDMA: 850, 1900

CDMA: 850, 1900

AMPS: 850

GSM: 900, 1900

CDMA: 850, 1900

GSM: 900, 1800

Data Technology EVDO rA 1xRTT - EVDO r0
Features 
GPS / Location n/a n/a - n/a
Accessibility
Hearing Aid Compatible Yes - - -
Multiple Languages n/a n/a - n/a
TTY/TDD (Digital) Yes Yes - Yes
Alerts
Extra Display - Yes - -
Ringer Profiles - - Yes Yes
Connectivity
Bluetooth Yes
Classic Audio
- - Yes
Classic Audio
Infrared (IR) - Yes - Yes
Mobile Hotspot n/a n/a - n/a
USB Yes
Micro-USB
- - Yes
Wi-Fi Yes
4 (802.11 b,g,n)
- - -
Contacts
Picture ID n/a n/a - n/a
Ringer ID n/a n/a - n/a
Voice Dialing n/a n/a Yes n/a
Customization
Custom Graphics n/a n/a - n/a
Custom Ringtones n/a n/a Yes n/a
Real-Music Ringers n/a n/a - n/a
Data & Network
Data Tethering n/a n/a Yes n/a
WAP / Web Browser n/a n/a - n/a
Input
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - - - Yes
Touch Screen Yes Yes - Yes
Memory
Memory Card Slot - Yes - Yes
Messaging
Email Client n/a n/a - n/a
Instant Messaging n/a n/a - n/a
MMS n/a n/a - n/a
Music
FM Radio Yes - - -
Headphone Jack (3.5mm) Yes - - -
Music Player n/a n/a - n/a
Stereo Speakers - - - Yes
Productivity
Alarm n/a n/a Yes n/a
Calculator n/a n/a Yes n/a
Calendar n/a n/a - n/a
To-Do List n/a n/a - n/a
Voice Memo n/a n/a - n/a
Software
Games n/a n/a Yes n/a
Voice
Headset Jack (2.5 mm) n/a n/a - n/a
Speaker Phone Yes - - Yes
  ZTE Render Samsung SPH-i550 Ericsson T28 World Samsung SCH-i830 / IP-830w
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Phone ZTE Render Samsung SPH-i550 Ericsson T28 World Samsung SCH-i830 / IP-830w

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