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Phone HTC Droid Eris ZTE Z221 Samsung SCH-A990 Huawei M750
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 3.2" diag.
5 : 3
2" diag.
4 : 3
? 2.8" diag.
4 : 3
Display Resolution & Type 320 x 480 pixels
(~180 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~200 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
240 x 320 pixels
(~143 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz ? ? ?
Battery 1,300 mAh 900 mAh 1,000 mAh 1,150 mAh
Processor 528 MHz MSM7600 ? ? ?
RAM ? ? ? ?
Storage ? raw hardware 142 MB ? raw hardware ? raw hardware
Main Camera 5 megapixel Yes 3 megapixel 1 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture CIF (352 x 288) QCIF (176 x 144) ? -
Front Camera - - - -
Weight 4.43 oz
(126g)
3.24 oz
(92g)
4.4 oz
(125g)
3.92 oz
(111g)
Dimensions 4.45" x 2.19" x 0.52"
(113 x 55 x 13.2 mm)
3.76" x 1.92" x 0.73"
(96 x 49 x 18.5 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
4.21" x 2.25" x 0.59"
(107 x 57 x 14.9 mm)
Form Factor Slab Clamshell Clamshell Slab
Platform / OS Android (proprietary) (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

CDMA: 850, 1700, 1900

Data Technology EVDO rA HSDPA 3.6 EVDO r0 1xRTT
Features 
Flashlight - - Yes -
GPS / Location n/a Yes Yes Yes
Accessibility
Hearing Aid Compatible Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3 (mostly compatible)
Yes
M3 (mostly compatible)
Multiple Languages n/a Yes Yes -
TTY/TDD (Digital) Yes Yes Yes Yes
Alerts
Extra Display - Yes Yes -
Ringer Profiles - Yes - -
Connectivity
Bluetooth Yes Yes Yes Yes
USB Yes
Mini-USB
Yes Yes Yes
Wi-Fi Yes
802.11 b,g
- - -
Contacts
Picture ID n/a - Yes Yes
Ringer ID n/a - Yes Yes
Voice Dialing n/a - Yes -
Customization
Custom Graphics n/a Yes Yes Yes
Custom Ringtones n/a Yes Yes Yes
Real-Music Ringers n/a Yes Yes -
Data & Network
Data Tethering n/a - Yes -
WAP / Web Browser n/a Yes Yes Yes
Input
Predictive Text Entry n/a Yes Yes -
Side Keys Yes Yes Yes Yes
Stylus - - - Yes
Touch Screen Yes
Capacitive
- - Yes
Resistive
Memory
Memory Card Slot Yes - Yes Yes
Messaging
Email Client n/a Yes - Yes
EMS / Picture Messaging n/a - Yes -
Instant Messaging n/a Yes - Yes
MMS n/a Yes Yes Yes
Text Messaging Templates n/a Yes Yes Yes
Music
Headphone Jack (3.5mm) Yes - - Yes
Music Player n/a - Yes Yes
Stereo Speakers - - Yes -
Photo & Video
TV Output - - Yes -
Productivity
Alarm n/a Yes Yes Yes
Calculator n/a Yes Yes Yes
Calendar n/a Yes Yes Yes
Voice Memo n/a Yes Yes Yes
Software
BREW n/a - Yes Yes
Games n/a Yes Yes Yes
Java (J2ME) n/a Yes - -
Voice
Speaker Phone Yes Yes Yes Yes
  HTC Droid Eris ZTE Z221 Samsung SCH-A990 Huawei M750
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Phone HTC Droid Eris ZTE Z221 Samsung SCH-A990 Huawei M750

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