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Phone LG Optimus Zone Sony Xperia XZ2 Motorola EM330 / EM28 Samsung SGH-E640 AT&T Vista
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Not yet released Released Released Released
Specifications 
Display Size 3.2" diag.
4 : 3
5.7" diag.
18 : 9
1.8" diag.
4 : 3
? 5.5" diag.
18 : 9
Display Resolution & Type 240 x 320 pixels
(~125 ppi)
LCD (TFT/TFD)
1080 x 2160 pixels
(~424 ppi)
LCD (TFT/TFD)
128 x 160 pixels
(~114 ppi)
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz 60 Hz ? ? 60 Hz
Battery 1,540 mAh 3,180 mAh 940 mAh 800 mAh 2,450 mAh
Processor 800 MHz Qualcomm Snapdragon S1 MSM7625A Qualcomm Snapdragon 845 ? ? 2 GHz MediaTek Helio A22 (MT6761V)
RAM 512 MB 4 GB ? ? 3 GB
Storage 4 GB 64 GB ? raw hardware ? raw hardware 32 GB
Main Camera 3 megapixel 19 megapixel 1 megapixel 1 megapixel 8 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture VGA (640 x 480) 4K UHD ? QCIF (176 x 144) 1080p HD
Front Camera - 5 megapixel - - 5 megapixel
Weight 3.88 oz
(110g)
6.98 oz
(198g)
3.17 oz
(90g)
3.17 oz
(90g)
5.51 oz
(156g)
Dimensions 4.04" x 2.42" x 0.47"
(103 x 61 x 11.9 mm)
6.02" x 2.83" x 0.44"
(153 x 72 x 11.1 mm)
3.71" x 1.95" x 0.68"
(94 x 50 x 17.4 mm)
3.37" x 1.78" x 0.93"
(86 x 45 x 23.6 mm)
5.88" x 2.82" x 0.35"
(149 x 72 x 8.9 mm)
Form Factor Slab Slab Clamshell Clamshell Slab
Platform / OS Android Android (proprietary) (proprietary) Android
Network Bands

CDMA: 850, 1900

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

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

GSM: 850, 1800, 1900

*

GSM: 900, 1800, 1900

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

WCDMA: 1, 2, 4, 5, 8

Data Technology EVDO rA LTE (Cat 18) EDGE GPRS LTE (Cat 4)
Features 
Fingerprint Reader - Yes
stand-alone
- - -
Flashlight - Yes - - Yes
GPS / Location n/a n/a - - n/a
Water-Resistant - Yes
IPX5 (direct spray)
- - -
Accessibility
Hearing Aid Compatible Yes Yes Yes - Yes
Multiple Languages n/a n/a Yes Yes n/a
TTY/TDD (Digital) Yes - Yes - -
Alerts
Extra Display - - Yes Yes -
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
NFC - Yes - - -
USB Yes
Micro-USB
Yes
USB Type C
Yes
Mini-USB
Yes Yes
USB Type C
Wi-Fi Yes
4 (802.11 b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
- - Yes
Contacts
Picture ID n/a n/a - Yes n/a
Ringer ID n/a n/a - Yes n/a
Voice Dialing n/a n/a - - n/a
Customization
Custom Graphics n/a n/a Yes Yes n/a
Custom Ringtones n/a n/a Yes Yes n/a
Real-Music Ringers n/a n/a Yes Yes n/a
Data & Network
Dual-SIM - Yes - - -
WAP / Web Browser n/a n/a Yes Yes n/a
Input
Predictive Text Entry n/a n/a Yes Yes n/a
Side Keys Yes Yes Yes Yes Yes
Touch Screen Yes Yes - - Yes
Memory
Memory Card Slot Yes Yes Yes - Yes
Messaging
Email Client n/a n/a - Yes n/a
EMS / Picture Messaging n/a n/a Yes Yes n/a
Instant Messaging n/a n/a - - n/a
MMS n/a n/a Yes Yes n/a
Text Messaging Templates n/a n/a Yes Yes n/a
Music
FM Radio - - Yes - -
Headphone Jack (3.5mm) Yes - Yes - Yes
Music Player n/a n/a Yes Yes n/a
Stereo Speakers - Yes - - -
Photo & Video
DLNA - Yes - - -
Miracast - Yes - - -
Power
Fast Charging - Yes - - -
Wireless Charging - Yes - - -
Productivity
Alarm n/a n/a Yes Yes n/a
Calculator n/a n/a Yes Yes n/a
Calendar n/a n/a Yes Yes n/a
To-Do List n/a n/a - Yes n/a
Voice Memo n/a n/a - Yes n/a
Software
Games n/a n/a Yes Yes n/a
Java (J2ME) n/a n/a Yes Yes n/a
Voice
HD Voice - Yes - - Yes
Speaker Phone Yes Yes Yes Yes Yes
  LG Optimus Zone Sony Xperia XZ2 Motorola EM330 / EM28 Samsung SGH-E640 AT&T Vista
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone LG Optimus Zone Sony Xperia XZ2 Motorola EM330 / EM28 Samsung SGH-E640 AT&T Vista

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