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Phone Huawei W1 Siemens CX75 ZTE Warp Elite Samsung SGH-E640 Ericsson T66
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Not yet released Released Released Released
Specifications 
Display Size 4" diag.
5 : 3
? 5.5" diag.
16 : 9
? ?
Display Resolution & Type 480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
132 x 176 pixels
LCD (TFT/TFD)
720 x 1280 pixels
(~267 ppi)
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
?
Display Refresh ? ? 60 Hz ? ?
Battery 1,950 mAh 750 mAh 3,000 mAh 800 mAh ?
Processor 1.2 GHz Qualcomm Snapdragon 400 MSM8230 ? 1.2 GHz Qualcomm Snapdragon 410 (MSM8916) ? ?
RAM 512 MB ? 2 GB ? ?
Storage 4 GB ? raw hardware 16 GB ? raw hardware ? raw hardware
Main Camera 5 megapixel 1 megapixel 13 megapixel 1 megapixel -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture 720p HD ? 1080p HD QCIF (176 x 144) -
Front Camera Yes - 5 megapixel - -
Weight 4.41 oz
(125g)
3.46 oz
(98g)
5.31 oz
(151g)
3.17 oz
(90g)
2.08 oz
(59g)
Dimensions 4.84" x 2.5" x 0.41"
(123 x 64 x 10.4 mm)
4.33" x 1.88" x 0.74"
(110 x 48 x 18.8 mm)
6.23" x 3.06" x 0.33"
(158 x 78 x 8.4 mm)
3.37" x 1.78" x 0.93"
(86 x 45 x 23.6 mm)
3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
Form Factor Slab Slab Slab Clamshell Slab
Platform / OS Windows (proprietary) Android (proprietary) (proprietary)
Network Bands

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

4G LTE: 2, 4, 5, 12, 25, 26, 41

CDMA: 800, 850, 1900

GSM: 900, 1800, 1900

GSM: 900, 1800, 1900

Data Technology HSPA+ 21 GPRS LTE (Cat 4) GPRS -
Features 
Flashlight - - Yes - -
GPS / Location n/a - n/a - -
Accessibility
Adjustable Text Size n/a - n/a - -
Hearing Aid Compatible Yes - Yes - -
Multiple Languages n/a Yes n/a Yes Yes
TTY/TDD (Digital) - - Yes - -
Alerts
Extra Display - - - Yes -
Ringer Profiles - Yes - - Yes
Connectivity
Bluetooth Yes Yes Yes Yes -
Infrared (IR) - Yes - - -
Mobile Hotspot n/a - n/a - -
USB Yes
Micro-USB
Yes Yes
Micro-USB
Yes -
Wi-Fi Yes
4 (802.11 b,g,n)
- 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 - n/a - -
Customization
Custom Graphics n/a Yes n/a Yes Yes
Custom Ringtones n/a Yes n/a Yes Yes
Real-Music Ringers n/a - n/a Yes -
Data & Network
Data Tethering n/a Yes n/a - -
WAP / Web Browser n/a Yes n/a Yes Yes
Input
Predictive Text Entry n/a Yes n/a Yes Yes
Side Keys Yes Yes Yes Yes Yes
Touch Screen Yes - Yes - -
Memory
Memory Card Slot Yes Yes Yes - -
Messaging
Email Client n/a Yes n/a Yes -
EMS / Picture Messaging n/a Yes n/a Yes Yes
Instant Messaging n/a - n/a - -
MMS n/a Yes n/a Yes -
Text Messaging Templates n/a - n/a Yes Yes
Music
FM Radio - - Yes - -
Headphone Jack (3.5mm) Yes - Yes - -
Music Player n/a Yes n/a Yes -
Power
Fast Charging - - 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 Yes n/a Yes Yes
Voice Memo n/a Yes n/a Yes -
Software
Games n/a Yes n/a Yes Yes
Java (J2ME) n/a Yes n/a Yes -
Voice
HD Voice - - Yes - -
Push-To-Talk - Yes - - -
Speaker Phone Yes Yes Yes Yes -
  Huawei W1 Siemens CX75 ZTE Warp Elite Samsung SGH-E640 Ericsson T66
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Phone Huawei W1 Siemens CX75 ZTE Warp Elite Samsung SGH-E640 Ericsson T66

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