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Phone AT&T Vista Coolpad Defiant Asus ROG Phone Ericsson T66
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 5.5" diag.
18 : 9
5" diag.
16 : 9
6" diag.
18 : 9
?
Display Resolution & Type 720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
480 x 854 pixels
(~196 ppi)
LCD (TFT/TFD)
1080 x 2160 pixels
(~402 ppi)
AMOLED
?
Display Refresh 60 Hz 60 Hz 60 Hz ?
Battery 2,450 mAh 2,450 mAh 4,000 mAh ?
Processor 2 GHz MediaTek Helio A22 (MT6761V) 1.4 GHz Qualcomm Snapdragon 425 (MSM8917) 3 GHz Qualcomm Snapdragon 845 ?
RAM 3 GB 1 GB 8 GB ?
Storage 32 GB 8 GB 128 GB * ? raw hardware
Main Camera 8 megapixel 5 megapixel 12 megapixel -
Wide Camera - - 8 megapixel -
Tele Camera - - - -
Video Capture 1080p HD 720p HD 4K UHD -
Front Camera 5 megapixel 2 megapixel 8 megapixel -
Weight 5.51 oz
(156g)
6.5 oz
(184g)
7.05 oz
(200g)
2.08 oz
(59g)
Dimensions 5.88" x 2.82" x 0.35"
(149 x 72 x 8.9 mm)
5.69" x 2.81" x 0.4"
(145 x 71 x 10.2 mm)
6.25" x 3" x 0.34"
(159 x 76 x 8.6 mm)
3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
Form Factor Slab Slab Slab Slab
Platform / OS Android Android Android (proprietary)
Network Bands

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

WCDMA: 1, 2, 4, 5, 8

4G LTE: 2, 4, 5, 12

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 28, 29, 32, 34, 38, 39, 40, 41, 46

WCDMA: 1, 2, 3, 4, 5, 8, 19

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

Data Technology LTE (Cat 4) LTE (Cat 4) LTE (Cat 16) -
Features 
Fingerprint Reader - - Yes -
Flashlight Yes Yes Yes -
Water-Resistant - - Yes -
Accessibility
Hearing Aid Compatible Yes Yes Yes -
Multiple Languages n/a n/a n/a Yes
TTY/TDD (Digital) - Yes - -
Alerts
Ringer Profiles - - - Yes
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
-
NFC - - Yes -
USB Yes
USB Type C
Yes
Micro-USB
Yes
USB Type C
-
Wi-Fi Yes Yes
4 (802.11 b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
-
Customization
Custom Graphics n/a n/a n/a Yes
Custom Ringtones n/a n/a n/a Yes
Data & Network
Dual-SIM - - Yes -
WAP / Web Browser n/a n/a n/a Yes
Input
Predictive Text Entry n/a n/a n/a Yes
Side Keys Yes Yes Yes Yes
Touch Screen Yes Yes Yes -
Memory
Memory Card Slot Yes Yes - -
Messaging
EMS / Picture Messaging n/a n/a n/a Yes
Text Messaging Templates n/a n/a n/a Yes
Music
FM Radio - - Yes -
Headphone Jack (3.5mm) Yes Yes Yes -
Stereo Speakers - - Yes -
Photo & Video
TV Output - - Yes -
Power
Fast Charging - - Yes -
Productivity
Alarm n/a n/a n/a Yes
Calculator n/a n/a n/a Yes
Calendar n/a n/a n/a Yes
To-Do List n/a n/a n/a Yes
Software
Games n/a n/a n/a Yes
Voice
HD Voice Yes - - -
Speaker Phone Yes Yes Yes -
  AT&T Vista Coolpad Defiant Asus ROG Phone Ericsson T66
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Phone AT&T Vista Coolpad Defiant Asus ROG Phone Ericsson T66

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