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Phone Samsung Galaxy S6 (GSM) Samsung DoubleTime HTC G2 Ericsson T66 Google Pixel 3a XL
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 5.1" diag.
16 : 9
3.2" diag.
5 : 3
3.7" diag.
5 : 3
? 6" diag.
18 : 9
Display Resolution & Type 1440 x 2560 pixels
(~576 ppi)
AMOLED
320 x 480 pixels
(~180 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~252 ppi)
LCD (TFT/TFD)
? 1080 x 2160 pixels
(~402 ppi)
AMOLED
Display Refresh 60 Hz 60 Hz 60 Hz ? 60 Hz
Battery 2,550 mAh 1,200 mAh 1,300 mAh ? 3,700 mAh
Processor 2.1 GHz Samsung Exynos 7420 600 MHz Qualcomm 800 MHz Qualcomm S2 MSM7230 ? 2 GHz Qualcomm Snapdragon 670
RAM 3 GB ? ? ? 4 GB
Storage 32 GB * ? raw hardware ? raw hardware ? raw hardware 64 GB
Main Camera 16 megapixel 3 megapixel 5 megapixel - 12 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture 4K UHD QVGA (320 x 240) 720p HD - 4K UHD
Front Camera 5 megapixel - - - 8 megapixel
Weight 4.87 oz
(138g)
5.22 oz
(148g)
6.5 oz
(184g)
2.08 oz
(59g)
5.89 oz
(167g)
Dimensions 5.65" x 2.78" x 0.27"
(143 x 71 x 6.8 mm)
4.45" x 2.44" x 0.59"
(113 x 62 x 15 mm)
4.68" x 2.37" x 0.55"
(119 x 60 x 14 mm)
3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
6.3" x 3" x 0.3"
(160 x 76 x 7.6 mm)
Form Factor Slab Clamshell Slab Slab Slab
Platform / OS Android Android Android (proprietary) Android
Network Bands

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 29, 30

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

*

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

WCDMA: 1, 4

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 20, 25, 26, 28, 29, 30, 38, 40, 41, 66, 71

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

Data Technology LTE (Cat 6) HSPA 7.2 HSPA 14.4 - LTE (Cat 11)
Features 
Barometer - - - - Yes
Fingerprint Reader Yes - - - Yes
stand-alone
Flashlight Yes - - - Yes
GPS / Location n/a n/a n/a - n/a
VR-ready Yes - - - -
Accessibility
Hearing Aid Compatible Yes Yes Yes - Yes
Multiple Languages n/a n/a n/a Yes n/a
TTY/TDD (Digital) Yes Yes - - Yes
Alerts
Ringer Profiles - - - Yes -
Connectivity
Bluetooth Yes Yes Yes - Yes
Infrared (IR) Yes - - - -
MirrorLink Yes - - - -
Mobile Hotspot n/a n/a n/a - n/a
NFC Yes - - - Yes
USB Yes
Micro-USB
Yes
Micro-USB
Yes - Yes
USB Type C
Wi-Fi Yes
5 (802.11 a,ac,b,g,n)
Yes
4 (802.11 b,g,n)
Yes
4 (802.11 b,g,n)
- Yes
5 (802.11 a,ac,b,g,n)
Contacts
Picture ID n/a n/a n/a - n/a
Ringer ID n/a n/a n/a - n/a
Voice Dialing n/a n/a n/a - n/a
Customization
Custom Graphics n/a n/a n/a Yes n/a
Custom Ringtones n/a n/a n/a Yes n/a
Real-Music Ringers n/a n/a n/a - n/a
Data & Network
Data Tethering n/a n/a n/a - n/a
WAP / Web Browser n/a n/a n/a Yes n/a
Input
Predictive Text Entry n/a n/a n/a Yes n/a
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - Yes Yes - -
Touch Screen Yes Yes Yes - Yes
Memory
Memory Card Slot - Yes Yes - -
Messaging
Email Client n/a n/a n/a - n/a
EMS / Picture Messaging n/a n/a n/a Yes n/a
Instant Messaging n/a n/a n/a - n/a
MMS n/a n/a n/a - n/a
Text Messaging Templates n/a n/a n/a Yes n/a
Music
Headphone Jack (3.5mm) Yes Yes Yes - Yes
Music Player n/a n/a n/a - n/a
Stereo Speakers - - - - Yes
Photo & Video
DLNA Yes - - - -
Miracast Yes - - - -
TV Output Yes - - - -
Power
Fast Charging Yes - - - Yes
Wireless Charging Yes - - - -
Productivity
Alarm n/a n/a n/a Yes n/a
Calculator n/a n/a n/a Yes n/a
Calendar n/a n/a n/a Yes n/a
To-Do List n/a n/a n/a Yes n/a
Voice Memo n/a n/a n/a - n/a
Software
Games n/a n/a n/a Yes n/a
Voice
Call Screening - - - - Yes
HD Voice Yes - - - Yes
Speaker Phone Yes Yes Yes - Yes
  Samsung Galaxy S6 (GSM) Samsung DoubleTime HTC G2 Ericsson T66 Google Pixel 3a XL
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung Galaxy S6 (GSM) Samsung DoubleTime HTC G2 Ericsson T66 Google Pixel 3a XL

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