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Phone Ericsson T66 Samsung SCH-A990 AT&T Vista
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size ? ? 5.5" diag.
18 : 9
Display Resolution & Type ? 240 x 320 pixels
LCD (TFT/TFD)
720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz
Battery ? 1,000 mAh 2,450 mAh
Processor ? ? 2 GHz MediaTek Helio A22 (MT6761V)
RAM ? ? 3 GB
Storage ? raw hardware ? raw hardware 32 GB
Main Camera - 3 megapixel 8 megapixel
Wide Camera - - -
Tele Camera - - -
Video Capture - ? 1080p HD
Front Camera - - 5 megapixel
Weight 2.08 oz
(59g)
4.4 oz
(125g)
5.51 oz
(156g)
Dimensions 3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
5.88" x 2.82" x 0.35"
(149 x 72 x 8.9 mm)
Form Factor Slab Clamshell Slab
Platform / OS (proprietary) (proprietary) Android
Network Bands

GSM: 900, 1800, 1900

CDMA: 850, 1900

4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30

WCDMA: 1, 2, 4, 5, 8

Data Technology - EVDO r0 LTE (Cat 4)
Features 
Flashlight - Yes Yes
GPS / Location - Yes n/a
Accessibility
Hearing Aid Compatible - Yes
M3 (mostly compatible)
Yes
M4, T4 (very tele-coil compatible)
Multiple Languages Yes Yes n/a
TTY/TDD (Digital) - Yes -
Alerts
Extra Display - Yes -
Ringer Profiles Yes - -
Connectivity
Bluetooth - Yes Yes
USB - Yes Yes
USB Type C
Wi-Fi - - Yes
Contacts
Picture ID - Yes n/a
Ringer ID - Yes n/a
Voice Dialing - Yes n/a
Customization
Custom Graphics Yes Yes n/a
Custom Ringtones Yes Yes n/a
Real-Music Ringers - Yes n/a
Data & Network
Data Tethering - Yes n/a
WAP / Web Browser Yes Yes n/a
Input
Predictive Text Entry Yes Yes n/a
Side Keys Yes Yes Yes
Touch Screen - - Yes
Capacitive
Memory
Memory Card Slot - Yes Yes
Messaging
EMS / Picture Messaging Yes Yes n/a
MMS - Yes n/a
Text Messaging Templates Yes Yes n/a
Music
Headphone Jack (3.5mm) - - Yes
Music Player - Yes n/a
Stereo Speakers - Yes -
Photo & Video
TV Output - Yes -
Productivity
Alarm Yes Yes n/a
Calculator Yes Yes n/a
Calendar Yes Yes n/a
To-Do List Yes - n/a
Voice Memo - Yes n/a
Software
BREW - Yes n/a
Games Yes Yes n/a
Voice
HD Voice - - Yes
Speaker Phone - Yes Yes
  Ericsson T66 Samsung SCH-A990 AT&T Vista
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Phone Ericsson T66 Samsung SCH-A990 AT&T Vista

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