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Phone Samsung SGH-X640 ZTE Groove Google Pixel 3a XL Samsung Galaxy Stratosphere II Pantech Reveal C790
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 3.2" diag.
5 : 3
6" diag.
18 : 9
4" diag.
5 : 3
2.2" diag.
4 : 3
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
320 x 480 pixels
(~180 ppi)
LCD (TFT/TFD)
1080 x 2160 pixels
(~402 ppi)
AMOLED
480 x 800 pixels
(~233 ppi)
AMOLED
320 x 240 pixels
(~182 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz 60 Hz 60 Hz ?
Battery 800 mAh 1,500 mAh 3,700 mAh 1,800 mAh 930 mAh
Processor ? 800 MHz Qualcomm MSM7627A 2 GHz Qualcomm Snapdragon 670 1.2 GHz Qualcomm Snapdragon S4 Plus MSM8960 ?
RAM ? 512 MB 4 GB 1 GB ?
Storage ? raw hardware 1 GB 64 GB 8 GB ? raw hardware
Main Camera Yes 3 megapixel 12 megapixel 5 megapixel 1 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - 720p HD 4K UHD 720p HD QVGA (320 x 240)
Front Camera - Yes 8 megapixel 1 megapixel -
Weight 3 oz
(85g)
4.5 oz
(128g)
5.89 oz
(167g)
5.43 oz
(154g)
4.2 oz
(119g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
4.67" x 2.46" x 0.55"
(119 x 62 x 14 mm)
6.3" x 3" x 0.3"
(160 x 76 x 7.6 mm)
4.97" x 2.58" x 0.53"
(126 x 66 x 13.5 mm)
3.91" x 2.36" x 0.58"
(99 x 60 x 14.8 mm)
Form Factor Clamshell Slab Slab Slide Slab
Platform / OS (proprietary) Android Android Android (proprietary)
Network Bands

GSM: 900, 1800, 1900

CDMA: 850, 1700, 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

4G LTE: 13

WCDMA: 1

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

Data Technology GPRS EVDO rA LTE (Cat 11) LTE (Cat 3) HSDPA 3.6
Features 
Barometer - - Yes - -
Fingerprint Reader - - Yes
stand-alone
- -
Flashlight - - Yes - -
GPS / Location - n/a n/a n/a Yes
Accessibility
Adjustable Text Size - n/a n/a n/a Yes
Hearing Aid Compatible - - Yes Yes Yes
Multiple Languages Yes n/a n/a n/a Yes
TTY/TDD (Digital) - - Yes Yes Yes
Alerts
Ringer Profiles - - - - Yes
Connectivity
Bluetooth - Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Mobile Hotspot - n/a n/a n/a -
NFC - - Yes Yes -
USB - Yes
Micro-USB
Yes
USB Type C
Yes Yes
Wi-Fi - Yes Yes
5 (802.11 a,ac,b,g,n)
Yes
4 (802.11 a,b,g,n)
-
Contacts
Picture ID Yes n/a n/a n/a Yes
Ringer ID Yes n/a n/a n/a Yes
Voice Dialing - n/a n/a n/a -
Customization
Custom Graphics Yes n/a n/a n/a Yes
Custom Ringtones Yes n/a n/a n/a Yes
Real-Music Ringers - n/a n/a n/a Yes
Data & Network
Data Tethering - n/a n/a n/a Yes
WAP / Web Browser Yes n/a n/a n/a Yes
Input
Predictive Text Entry Yes n/a n/a n/a Yes
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - - - - Yes
Touch Screen - Yes Yes Yes -
Memory
Memory Card Slot - Yes - Yes Yes
Messaging
Email Client - n/a n/a n/a Yes
EMS / Picture Messaging Yes n/a n/a n/a -
Instant Messaging - n/a n/a n/a Yes
MMS Yes n/a n/a n/a Yes
Text Messaging Templates Yes n/a n/a n/a Yes
Music
Headphone Jack (3.5mm) - Yes Yes Yes -
Music Player - n/a n/a n/a Yes
Stereo Speakers - - Yes - -
Photo & Video
DLNA - - - Yes -
Power
Fast Charging - - Yes - -
Productivity
Alarm Yes n/a n/a n/a Yes
Calculator Yes n/a n/a n/a Yes
Calendar Yes n/a n/a n/a Yes
To-Do List Yes n/a n/a n/a -
Voice Memo Yes n/a n/a n/a Yes
Software
Games Yes n/a n/a n/a Yes
Java (J2ME) Yes n/a n/a n/a Yes
Voice
Call Screening - - Yes - -
HD Voice - - Yes - -
Headset Jack (2.5 mm) Yes n/a n/a n/a -
Speaker Phone Yes Yes Yes Yes Yes
  Samsung SGH-X640 ZTE Groove Google Pixel 3a XL Samsung Galaxy Stratosphere II Pantech Reveal C790
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Phone Samsung SGH-X640 ZTE Groove Google Pixel 3a XL Samsung Galaxy Stratosphere II Pantech Reveal C790

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