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Phone Ericsson T66 Samsung SCH-A990 AT&T Vista TCL 40 XL / Jitterbug Smart 4 Samsung SCH-A610
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? 5.5" diag.
18 : 9
6.8" diag.
20 : 9
?
Display Resolution & Type ? 240 x 320 pixels
LCD (TFT/TFD)
720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
720 x 1600 pixels
(~260 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz 90 Hz ?
Battery ? 1,000 mAh 2,450 mAh 5,000 mAh 1,300 mAh
Processor ? ? 2 GHz MediaTek Helio A22 (MT6761V) 2.3 GHz MediaTek Helio G37 ?
RAM ? ? 3 GB 4 GB ?
Storage ? raw hardware ? raw hardware 32 GB 128 GB ? raw hardware
Main Camera - 3 megapixel 8 megapixel 50 megapixel Yes
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - ? 1080p HD 1080p HD -
Front Camera - - 5 megapixel 8 megapixel -
Weight 2.08 oz
(59g)
4.4 oz
(125g)
5.51 oz
(156g)
6.88 oz
(195g)
4.23 oz
(120g)
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)
6.61" x 3.01" x 0.35"
(168 x 76 x 8.8 mm)
3.5" x 1.9" x 0.9"
(89 x 48 x 22.9 mm)
Form Factor Slab Clamshell Slab Slab Clamshell
Platform / OS (proprietary) (proprietary) Android Android (proprietary)
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

4G LTE: 2, 4, 5, 12, 13, 25, 26, 41, 66, 71

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

Data Technology - EVDO r0 LTE (Cat 4) LTE (Cat 6) 1xRTT
Features 
Barometer - - - Yes -
Fingerprint Reader - - - Yes -
Flashlight - Yes Yes Yes -
GPS / Location - Yes n/a n/a Yes
Accessibility
Hearing Aid Compatible - Yes
M3 (mostly compatible)
Yes
M4, T4 (very tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
-
Multiple Languages Yes Yes n/a n/a Yes
TTY/TDD (Digital) - Yes - Yes -
Alerts
Extra Display - Yes - - -
Ringer Profiles Yes - - - -
Connectivity
Bluetooth - Yes Yes Yes -
USB - Yes Yes
USB Type C
Yes
USB Type C
-
Wi-Fi - - Yes Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID - Yes n/a n/a Yes
Ringer ID - Yes n/a n/a Yes
Voice Dialing - Yes n/a n/a Yes
Customization
Custom Graphics Yes Yes n/a n/a Yes
Custom Ringtones Yes Yes n/a n/a Yes
Real-Music Ringers - Yes n/a n/a -
Data & Network
Data Tethering - Yes n/a n/a Yes
WAP / Web Browser Yes Yes n/a n/a Yes
Input
Predictive Text Entry Yes Yes n/a n/a Yes
Side Keys Yes Yes Yes Yes Yes
Touch Screen - - Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot - Yes Yes Yes -
Messaging
EMS / Picture Messaging Yes Yes n/a n/a Yes
MMS - Yes n/a n/a Yes
Text Messaging Templates Yes Yes n/a n/a Yes
Music
Headphone Jack (3.5mm) - - Yes Yes -
Music Player - Yes n/a n/a -
Stereo Speakers - Yes - Yes -
Photo & Video
TV Output - Yes - - -
Power
Fast Charging - - - Yes -
Productivity
Alarm Yes Yes n/a n/a Yes
Calculator Yes Yes n/a n/a Yes
Calendar Yes Yes n/a n/a Yes
To-Do List Yes - n/a n/a Yes
Voice Memo - Yes n/a n/a Yes
Software
BREW - Yes n/a n/a Yes
Games Yes Yes n/a n/a Yes
Voice
HD Voice - - Yes Yes -
Headset Jack (2.5 mm) - - n/a n/a Yes
Speaker Phone - Yes Yes Yes -
  Ericsson T66 Samsung SCH-A990 AT&T Vista TCL 40 XL / Jitterbug Smart 4 Samsung SCH-A610
  X > < X > < X > < X > < X

NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Ericsson T66 Samsung SCH-A990 AT&T Vista TCL 40 XL / Jitterbug Smart 4 Samsung SCH-A610

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