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Phone Samsung SCH-A990 Ericsson T66 Samsung Messager Touch R630 / R631 ZTE Blade Vantage
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? 2.6" diag.
4 : 3
5" diag.
16 : 9
Display Resolution & Type 240 x 320 pixels
LCD (TFT/TFD)
? 240 x 320 pixels
(~154 ppi)
LCD (TFT/TFD)
480 x 854 pixels
(~196 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? 60 Hz
Battery 1,000 mAh ? 1,000 mAh 2,500 mAh
Processor ? ? ? 1.1 GHz Qualcomm Snapdragon 210 (MSM8909)
RAM ? ? ? 2 GB
Storage ? raw hardware ? raw hardware ? raw hardware 16 GB
Main Camera 3 megapixel - 2 megapixel 8 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? - QCIF (176 x 144) 720p HD
Front Camera - - - 2 megapixel
Weight 4.4 oz
(125g)
2.08 oz
(59g)
3.81 oz
(108g)
5.29 oz
(150g)
Dimensions 3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
4.13" x 2.12" x 0.59"
(105 x 54 x 15 mm)
5.73" x 2.85" x 0.36"
(146 x 72 x 9.2 mm)
Form Factor Clamshell Slab Slide Slab
Platform / OS (proprietary) (proprietary) (proprietary) Android
Network Bands

CDMA: 850, 1900

GSM: 900, 1800, 1900

CDMA: 850, 1900

*

4G LTE: 2, 4, 5, 13

Data Technology EVDO r0 - EVDO r0 LTE (Cat 4)
Features 
Flashlight Yes - - Yes
GPS / Location Yes - Yes n/a
Accessibility
Hearing Aid Compatible Yes
M3 (mostly compatible)
- Yes
M4, T3 (mostly tele-coil compatible)
Yes
M4, T4 (very tele-coil compatible)
Multiple Languages Yes Yes Yes n/a
TTY/TDD (Digital) Yes - Yes Yes
Alerts
Extra Display Yes - - -
Ringer Profiles - Yes - -
Connectivity
Bluetooth Yes - Yes Yes
USB Yes - Yes Yes
Micro-USB
Wi-Fi - - - Yes
4 (802.11 b,g,n)
Contacts
Picture ID Yes - Yes n/a
Ringer ID 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 - n/a
Input
Predictive Text Entry Yes Yes Yes n/a
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - - Yes -
Touch Screen - - Yes
Resistive
Yes
Capacitive
Memory
Memory Card Slot Yes - Yes Yes
Messaging
EMS / Picture Messaging Yes Yes - n/a
MMS Yes - Yes n/a
Text Messaging Templates Yes Yes Yes n/a
Music
Headphone Jack (3.5mm) - - Yes Yes
Music Player Yes - Yes n/a
Stereo Speakers Yes - - -
Photo & Video
TV Output 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 n/a
Software
BREW Yes - Yes n/a
Games Yes Yes Yes n/a
Voice
HD Voice - - - Yes
Speaker Phone Yes - Yes Yes
  Samsung SCH-A990 Ericsson T66 Samsung Messager Touch R630 / R631 ZTE Blade Vantage
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SCH-A990 Ericsson T66 Samsung Messager Touch R630 / R631 ZTE Blade Vantage

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