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Phone Samsung Knack U310 Pantech Duo C810 Motorola V220 Ericsson R278d Pantech Marauder
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 2.2" diag.
4 : 3
2.2" diag.
4 : 3
? ? 3.8" diag.
5 : 3
Display Resolution & Type 176 x 220 pixels
(~128 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
128 x 128 pixels
LCD (STN)
101 x 40 pixels 480 x 800 pixels
(~246 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? ? 60 Hz
Battery 1,000 mAh 1,320 mAh 820 mAh ? 1,680 mAh
Processor ? ARM 920t PXA27x ? ? 1.2 GHz Qualcomm Snapdragon S4 MSM8960-Lite
RAM ? ? ? ? 1 GB
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware 4 GB
Main Camera - 1 megapixel Yes - 5 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - QVGA (320 x 240) - - 720p HD
Front Camera - - - - Yes
Weight 3.63 oz
(103g)
3.88 oz
(110g)
3.7 oz
(105g)
9.28 oz
(263g)
6.07 oz
(172g)
Dimensions 3.78" x 2.01" x 0.74"
(96 x 51 x 18.8 mm)
4.01" x 1.97" x 0.78"
(102 x 50 x 19.8 mm)
3.29" x 1.73" x 0.94"
(84 x 44 x 23.9 mm)
5.1" x 2" x 1"
(130 x 51 x 25.4 mm)
5.06" x 2.57" x 0.49"
(129 x 65 x 12.4 mm)
Form Factor Clamshell Slide Clamshell Slab Slide
Platform / OS (proprietary) Windows Mobile Standard (proprietary) (proprietary) Android
Network Bands

CDMA: 850, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

GSM: 850, 1800, 1900

*

TDMA: 850, 1900

AMPS: 850

4G LTE: 13

CDMA: 850, 1900

Data Technology - HSDPA 1.8 GPRS - LTE (Cat 3)
Features 
GPS / Location Yes n/a - - n/a
Accessibility
Adjustable Text Size Yes n/a - - n/a
Hearing Aid Compatible Yes
M4, T4 (very tele-coil compatible)
- Yes
M3 (mostly compatible)
- Yes
M4, T3 (mostly tele-coil compatible)
Multiple Languages Yes n/a Yes Yes n/a
TTY/TDD (Digital) Yes - - - Yes
Alerts
Extra Display Yes - Yes - -
Ringer Profiles - Yes Yes Yes -
Connectivity
Bluetooth - Yes - - Yes
Mobile Hotspot - n/a - - n/a
USB - Yes Yes - Yes
Micro-USB
Wi-Fi - - - - Yes
Contacts
Picture ID - n/a Yes - n/a
Ringer ID - n/a Yes - n/a
Voice Dialing Yes n/a Yes - n/a
Customization
Custom Graphics - n/a Yes - n/a
Custom Ringtones - n/a Yes Yes n/a
Real-Music Ringers - n/a Yes - n/a
Data & Network
Data Tethering - n/a Yes Yes n/a
WAP / Web Browser - n/a Yes Yes n/a
Input
Predictive Text Entry Yes n/a Yes Yes n/a
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - Yes - - Yes
Touch Screen - - - - Yes
Capacitive
Memory
Memory Card Slot - Yes - - Yes
Messaging
Email Client - n/a - - n/a
EMS / Picture Messaging Yes n/a Yes - n/a
Instant Messaging - n/a Yes - n/a
MMS - n/a Yes - n/a
Text Messaging Templates - n/a Yes - n/a
Music
Headphone Jack (3.5mm) - - - - Yes
Music Player - n/a - - n/a
Photo & Video
DLNA - - - - Yes
Productivity
Alarm Yes n/a Yes Yes n/a
Calculator Yes n/a Yes - n/a
Calendar Yes n/a Yes - n/a
To-Do List - n/a - - n/a
Voice Memo - n/a - - n/a
Software
Games - n/a Yes - n/a
Java (J2ME) - n/a Yes - n/a
Voice
Headset Jack (2.5 mm) Yes n/a Yes - n/a
Speaker Phone Yes Yes Yes - Yes
  Samsung Knack U310 Pantech Duo C810 Motorola V220 Ericsson R278d Pantech Marauder
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Phone Samsung Knack U310 Pantech Duo C810 Motorola V220 Ericsson R278d Pantech Marauder

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