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Phone Samsung SGH-X640 LG G8 ThinQ Samsung SGH-X820 T-Mobile REVVL V Motorola T191
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 6.1" diag.
19.5 : 9
? 6.5" diag.
20 : 9
?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
1440 x 3120 pixels
(~563 ppi)
AMOLED
220 x 176 pixels
LCD (TFT/TFD)
720 x 1600 pixels
(~269 ppi)
LCD (TFT/TFD)
98 x 64 pixels
Display Refresh ? 60 Hz ? 60 Hz ?
Battery 800 mAh 3,500 mAh 650 mAh 4,000 mAh ?
Processor ? 2.8 GHz Qualcomm Snapdragon 855 ? 2 GHz MediaTek Helio G25 (MT6762V) ?
RAM ? 6 GB ? 3 GB ?
Storage ? raw hardware 128 GB ? raw hardware 32 GB ? raw hardware
Main Camera Yes 12 megapixel 2 megapixel 13 megapixel -
Wide Camera - 16 megapixel - - -
Tele Camera - - - - -
Video Capture - 4K UHD ? 1080p HD -
Front Camera - 8 megapixel - 5 megapixel -
Weight 3 oz
(85g)
5.96 oz
(169g)
2.33 oz
(66g)
6.45 oz
(183g)
3.49 oz
(99g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
5.98" x 2.83" x 0.33"
(152 x 72 x 8.4 mm)
4.45" x 1.97" x 0.27"
(113 x 50 x 6.9 mm)
6.57" x 3.01" x 0.34"
(167 x 76 x 8.6 mm)
4.17" x 1.57" x 0.59"
(106 x 40 x 15 mm)
Form Factor Clamshell Slab Slab Slab Slab
Platform / OS (proprietary) Android (proprietary) Android (proprietary)
Network Bands

GSM: 900, 1800, 1900

4G LTE: 2, 4, 5, 7, 12, 13, 14, 17, 25, 26, 29, 30, 41, 48, 66, 71

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

*

GSM: 900, 1800, 1900

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

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

GSM: 1900

Data Technology GPRS LTE (Cat 20) EDGE LTE (Cat 6) -
Features 
Barometer - Yes - - -
Fingerprint Reader - Yes
stand-alone
- Yes
stand-alone
-
Flashlight - Yes - Yes -
Water-Resistant - Yes
IPX8 (SCUBA)
- - -
Accessibility
Hearing Aid Compatible - Yes
M4, T3 (mostly tele-coil compatible)
- Yes
M4, T3 (mostly tele-coil compatible)
-
Multiple Languages Yes n/a Yes n/a Yes
TTY/TDD (Digital) - Yes - Yes -
Alerts
Ringer Profiles - - - - Yes
Connectivity
Bluetooth - Yes Yes Yes -
MirrorLink - Yes - - -
NFC - Yes - - -
USB - Yes
USB Type C
Yes Yes
USB Type C
-
Wi-Fi - Yes
5 (802.11 a,ac,b,g,n)
- Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID Yes n/a Yes n/a -
Ringer ID Yes n/a Yes n/a -
Voice Dialing - n/a - n/a Yes
Customization
Custom Graphics Yes n/a Yes n/a Yes
Custom Ringtones Yes n/a Yes n/a Yes
Real-Music Ringers - n/a Yes n/a -
Data & Network
Data Tethering - n/a - n/a Yes
External Antenna Jack - n/a Yes n/a -
WAP / Web Browser Yes n/a Yes n/a Yes
Input
Predictive Text Entry Yes n/a Yes n/a Yes
Side Keys Yes Yes Yes Yes -
Touch Screen - Yes
Capacitive
- Yes
Capacitive
-
Memory
Memory Card Slot - Yes - Yes -
Messaging
Email Client - n/a Yes n/a -
EMS / Picture Messaging Yes n/a Yes n/a -
MMS Yes n/a Yes n/a -
Text Messaging Templates Yes n/a Yes n/a Yes
Music
FM Radio - Yes - Yes -
Headphone Jack (3.5mm) - Yes - Yes -
Stereo Speakers - Yes - - -
Photo & Video
DLNA - Yes - - -
Miracast - Yes - - -
TV Output - - Yes - -
Power
Fast Charging - Yes - Yes -
Wireless Charging - Yes - - -
Productivity
Alarm Yes n/a Yes n/a Yes
Calculator Yes n/a Yes n/a Yes
Calendar Yes n/a Yes n/a Yes
To-Do List Yes n/a Yes n/a -
Voice Memo Yes n/a Yes n/a Yes
Software
Games Yes n/a Yes n/a Yes
Java (J2ME) Yes n/a Yes n/a -
Voice
HD Voice - Yes - Yes -
Headset Jack (2.5 mm) Yes n/a - n/a Yes
Speaker Phone Yes Yes Yes Yes -
  Samsung SGH-X640 LG G8 ThinQ Samsung SGH-X820 T-Mobile REVVL V Motorola T191
  X > < X > < X > < X > < X

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

 
Phone Samsung SGH-X640 LG G8 ThinQ Samsung SGH-X820 T-Mobile REVVL V Motorola T191

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