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Phone Motorola ROKR E1 Samsung SGH-X640 ZTE MSGM8 II Samsung DoubleTime
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? 2.2" diag.
4 : 3
3.2" diag.
5 : 3
Display Resolution & Type 176 x 220 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
220 x 176 pixels
(~130 ppi)
LCD (TFT/TFD)
320 x 480 pixels
(~180 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? 60 Hz
Battery ? 800 mAh 900 mAh 1,200 mAh
Processor ? ? ? 600 MHz Qualcomm
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera Yes Yes 1 megapixel 3 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? - - QVGA (320 x 240)
Front Camera - - - -
Weight 3.77 oz
(107g)
3 oz
(85g)
3.65 oz
(104g)
5.22 oz
(148g)
Dimensions 4.25" x 1.81" x 0.8"
(108 x 46 x 20.3 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
4.2" x 2.4" x 0.54"
(107 x 61 x 13.7 mm)
4.45" x 2.44" x 0.59"
(113 x 62 x 15 mm)
Form Factor Slab Clamshell Slab Clamshell
Platform / OS (proprietary) (proprietary) (proprietary) Android
Network Bands

GSM: 850, 1800, 1900

*

GSM: 900, 1800, 1900

CDMA: 850, 1700, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

Data Technology GPRS GPRS 1xRTT HSPA 7.2
Features 
GPS / Location - - Yes n/a
Accessibility
Hearing Aid Compatible - - Yes
M4, T4 (very tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Multiple Languages Yes Yes Yes n/a
TTY/TDD (Digital) Yes - Yes Yes
Alerts
Ringer Profiles Yes - - -
Connectivity
Bluetooth Yes - Yes Yes
Mobile Hotspot - - - n/a
USB Yes - Yes
Mini-USB
Yes
Micro-USB
Wi-Fi - - - Yes
4 (802.11 b,g,n)
Contacts
Picture ID Yes Yes Yes n/a
Ringer ID Yes Yes Yes n/a
Voice Dialing Yes - Yes n/a
Customization
Custom Graphics Yes Yes Yes n/a
Custom Ringtones Yes Yes Yes n/a
Real-Music Ringers Yes - Yes n/a
Data & Network
Data Tethering Yes - - n/a
WAP / Web Browser Yes Yes Yes n/a
Input
Predictive Text Entry Yes Yes - n/a
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - - Yes Yes
Touch Screen - - - Yes
Capacitive
Memory
Memory Card Slot Yes - - Yes
Messaging
Email Client Yes - - n/a
EMS / Picture Messaging Yes Yes - n/a
Instant Messaging Yes - - n/a
MMS Yes Yes Yes n/a
Text Messaging Templates - Yes - n/a
Music
Headphone Jack (3.5mm) - - - Yes
Music Player Yes - - n/a
Stereo Speakers Yes - - -
Productivity
Alarm Yes Yes Yes n/a
Calculator Yes Yes Yes n/a
Calendar Yes Yes Yes n/a
To-Do List - Yes - n/a
Voice Memo Yes Yes Yes n/a
Software
BREW - - Yes n/a
Games Yes Yes Yes n/a
Java (J2ME) Yes Yes - n/a
Voice
Headset Jack (2.5 mm) Yes Yes Yes n/a
Speaker Phone Yes Yes Yes Yes
  Motorola ROKR E1 Samsung SGH-X640 ZTE MSGM8 II Samsung DoubleTime
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Motorola ROKR E1 Samsung SGH-X640 ZTE MSGM8 II Samsung DoubleTime

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