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Phone Apple iPhone 4 (GSM) Samsung Knack U310 HTC Arrive / 7 Pro (CDMA) Coolpad Defiant Samsung SPH-N270 (Matrix Phone)
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 3.5" diag.
5 : 3
2.2" diag.
4 : 3
3.6" diag.
5 : 3
5" diag.
16 : 9
?
Display Resolution & Type 640 x 960 pixels
(~330 ppi)
LCD (TFT/TFD)
176 x 220 pixels
(~128 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~259 ppi)
LCD (TFT/TFD)
480 x 854 pixels
(~196 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh 60 Hz ? ? 60 Hz ?
Battery ? 1,000 mAh 1,500 mAh 2,450 mAh 1,000 mAh
Processor Apple A4 ? 1 GHz Qualcomm Snapdragon 1.4 GHz Qualcomm Snapdragon 425 (MSM8917) ?
RAM ? ? ? 1 GB ?
Storage 32 GB * ? raw hardware 16 GB 8 GB ? raw hardware
Main Camera 5 megapixel - 5 megapixel 5 megapixel -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture 720p HD - 720p HD 720p HD -
Front Camera Yes - - 2 megapixel -
Weight 4.8 oz
(136g)
3.63 oz
(103g)
6.5 oz
(184g)
6.5 oz
(184g)
4.66 oz
(132g)
Dimensions 4.5" x 2.31" x 0.37"
(114 x 59 x 9.4 mm)
3.78" x 2.01" x 0.74"
(96 x 51 x 18.8 mm)
4.63" x 2.32" x 0.61"
(118 x 59 x 15.5 mm)
5.69" x 2.81" x 0.4"
(145 x 71 x 10.2 mm)
4.53" x 2.28" x 0.79"
(115 x 58 x 20.1 mm)
Form Factor Slab Clamshell Slide Slab Slide
Platform / OS iOS (proprietary) Windows Android (proprietary)
Network Bands

WCDMA: 1, 2, 5, 8

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

CDMA: 850, 1900

4G LTE: 2, 4, 5, 12

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

Data Technology HSPA 7.2 - EVDO rA LTE (Cat 4) -
Features 
Flashlight - - - Yes -
GPS / Location n/a Yes n/a n/a Yes
Accessibility
Adjustable Text Size n/a Yes n/a n/a -
Hearing Aid Compatible Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4, T4 (very tele-coil compatible)
- Yes
M4, T3 (mostly tele-coil compatible)
-
Multiple Languages n/a Yes n/a n/a Yes
TTY/TDD (Digital) Yes Yes Yes Yes -
Alerts
Extra Display - Yes - - -
Connectivity
Bluetooth Yes - Yes Yes -
Mobile Hotspot n/a - n/a n/a -
USB Yes - Yes Yes
Micro-USB
-
Wi-Fi Yes
4 (802.11 b,g,n)
- Yes
4 (802.11 b,g,n)
Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID n/a - n/a n/a Yes
Ringer ID n/a - n/a n/a Yes
Voice Dialing n/a Yes n/a n/a Yes
Customization
Custom Graphics n/a - n/a n/a -
Custom Ringtones n/a - n/a n/a -
Real-Music Ringers n/a - n/a n/a -
Data & Network
Data Tethering n/a - n/a n/a -
WAP / Web Browser n/a - n/a n/a -
Input
Predictive Text Entry n/a Yes n/a n/a Yes
Side Keys Yes Yes Yes Yes -
Text Keyboard, Hardware - - Yes - -
Touch Screen Yes
Capacitive
- Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot - - - Yes -
Messaging
Email Client n/a - n/a n/a -
EMS / Picture Messaging n/a Yes n/a n/a -
MMS n/a - n/a n/a -
Music
FM Radio - - Yes - -
Headphone Jack (3.5mm) Yes - Yes Yes -
Music Player n/a - n/a n/a -
Photo & Video
TV Output Yes - - - -
Productivity
Alarm n/a Yes n/a n/a Yes
Calculator n/a Yes n/a n/a Yes
Calendar n/a Yes n/a n/a Yes
To-Do List n/a - n/a n/a Yes
Voice Memo n/a - n/a n/a Yes
Software
Games n/a - n/a n/a -
Voice
Headset Jack (2.5 mm) n/a Yes n/a n/a Yes
Speaker Phone Yes Yes Yes Yes -
  * Some versions only
  Apple iPhone 4 (GSM) Samsung Knack U310 HTC Arrive / 7 Pro (CDMA) Coolpad Defiant Samsung SPH-N270 (Matrix Phone)
  X > < X > < X > < X > < X

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

 
Phone Apple iPhone 4 (GSM) Samsung Knack U310 HTC Arrive / 7 Pro (CDMA) Coolpad Defiant Samsung SPH-N270 (Matrix Phone)

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