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Phone ZTE Engage LT / Engage MT LG Extravert 2 / Freedom II Apple iPhone 4 (GSM) Samsung SGH-X400 Ericsson T39
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 4" diag.
5 : 3
3.2" diag.
5 : 3
3.5" diag.
5 : 3
? ?
Display Resolution & Type 480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
240 x 400 pixels
(~146 ppi)
LCD (TFT/TFD)
640 x 960 pixels
(~330 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
?
LCD (Grayscale)
Display Refresh 60 Hz ? 60 Hz ? ?
Battery 1,900 mAh 1,000 mAh ? 620 mAh ?
Processor ? ? Apple A4 ? ?
RAM 1 GB ? ? ? ?
Storage 4 GB 512 MB 32 GB * ? raw hardware ? raw hardware
Main Camera 3 megapixel 2 megapixel 5 megapixel - -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture WVGA / 480p QVGA (320 x 240) 720p HD - -
Front Camera Yes - Yes - -
Weight 5.09 oz
(144g)
4.15 oz
(118g)
4.8 oz
(136g)
3.17 oz
(90g)
3.03 oz
(86g)
Dimensions 4.78" x 2.54" x 0.46"
(121 x 64 x 11.7 mm)
4.4" x 2.15" x 0.64"
(112 x 55 x 16.3 mm)
4.5" x 2.31" x 0.37"
(114 x 59 x 9.4 mm)
3.39" x 1.81" x 0.8"
(86 x 46 x 20.3 mm)
3.78" x 1.97" x 0.71"
(96 x 50 x 18 mm)
Form Factor Slab Slide Slab Clamshell Flip
Platform / OS Android (proprietary) iOS (proprietary) (proprietary)
Network Bands

CDMA: 850, 1700, 1900

CDMA: 850, 1900

WCDMA: 1, 2, 5, 8

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

GSM: 900, 1800, 1900

Data Technology EVDO rA 1xRTT HSPA 7.2 GPRS GPRS
Features 
GPS / Location n/a Yes n/a - -
Accessibility
Adjustable Text Size n/a Yes n/a - -
Hearing Aid Compatible - Yes Yes - -
Multiple Languages n/a Yes n/a Yes Yes
TTY/TDD (Digital) Yes Yes Yes - -
Alerts
Extra Display - - - Yes -
Ringer Profiles - - - - Yes
Connectivity
Bluetooth Yes Yes Yes - Yes
Infrared (IR) - - - Yes Yes
Mobile Hotspot n/a - n/a - -
USB Yes
Micro-USB
Yes
Micro-USB
Yes - -
Wi-Fi Yes - Yes
4 (802.11 b,g,n)
- -
Contacts
Picture ID n/a Yes n/a Yes -
Ringer ID n/a Yes n/a Yes -
Voice Dialing n/a Yes n/a - Yes
Customization
Custom Graphics n/a Yes n/a Yes Yes
Custom Ringtones n/a Yes n/a Yes Yes
Real-Music Ringers n/a Yes n/a - -
Data & Network
Data Tethering n/a - n/a - Yes
WAP / Web Browser n/a Yes n/a Yes Yes
Input
Predictive Text Entry n/a - n/a Yes Yes
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - Yes - - -
Touch Screen Yes Yes Yes - -
Memory
Memory Card Slot Yes Yes - - -
Messaging
Email Client n/a Yes n/a - -
EMS / Picture Messaging n/a - n/a Yes -
Instant Messaging n/a - n/a - -
MMS n/a Yes n/a - -
Text Messaging Templates n/a Yes n/a Yes Yes
Music
FM Radio - - - Yes -
Headphone Jack (3.5mm) Yes Yes Yes - -
Music Player n/a Yes n/a - -
Photo & Video
TV Output - - Yes - -
Productivity
Alarm n/a Yes n/a Yes Yes
Calculator n/a Yes n/a Yes Yes
Calendar n/a Yes n/a Yes Yes
To-Do List n/a - n/a Yes -
Voice Memo n/a Yes n/a - Yes
Software
BREW n/a Yes n/a - -
Games n/a Yes n/a Yes Yes
Java (J2ME) n/a - n/a Yes -
Voice
Headset Jack (2.5 mm) n/a - n/a Yes -
Speaker Phone Yes Yes Yes - -
  * Some versions only
  ZTE Engage LT / Engage MT LG Extravert 2 / Freedom II Apple iPhone 4 (GSM) Samsung SGH-X400 Ericsson T39
  X > < X > < X > < X > < X

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

 
Phone ZTE Engage LT / Engage MT LG Extravert 2 / Freedom II Apple iPhone 4 (GSM) Samsung SGH-X400 Ericsson T39

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