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Phone Nuu F4L LG Stylo 4 Samsung SGH-X640 Motorola i90c Sony Xperia Z3 Compact
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Not yet released Released Released Released Released
Specifications 
Display Size 2.8" diag.
4 : 3
6.2" diag.
18 : 9
? ? 4.6" diag.
16 : 9
Display Resolution & Type 240 x 320 pixels
(~143 ppi)
LCD (STN)
1080 x 2160 pixels
(~390 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
?
LCD (Grayscale)
720 x 1280 pixels
(~319 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz 60 Hz ? ? 60 Hz
Battery 1,350 mAh 3,300 mAh 800 mAh ? 2,600 mAh
Processor 1.1 GHz MediaTek MT6731 1.8 GHz Qualcomm Snapdragon 450 ? ? 2.5 GHz Qualcomm Snapdragon 801 (MSM8974AC)
RAM 512 MB 2 GB * ? ? 2 GB
Storage 4 GB 32 GB * ? raw hardware ? raw hardware 16 GB
Main Camera 2 megapixel 13 megapixel Yes - 20 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture 720p HD 1080p HD - - 4K UHD
Front Camera Yes 5 megapixel - - 2 megapixel
Weight 4.5 oz
(128g)
6.07 oz
(172g)
3 oz
(85g)
5.33 oz
(151g)
4.55 oz
(129g)
Dimensions 4.31" x 2.27" x 0.83"
(109 x 58 x 21 mm)
6.31" x 3.06" x 0.33"
(160 x 78 x 8.4 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.5" x 2" x 1.1"
(89 x 51 x 27.9 mm)
5" x 2.56" x 0.34"
(127 x 65 x 8.6 mm)
Form Factor Clamshell Slab Clamshell Clamshell Slab
Platform / OS (proprietary) Android (proprietary) (proprietary) Android
Network Bands

4G LTE: 2, 4, 5, 12, 13, 66

WCDMA: 2, 4, 5

GSM: 850, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 12, 13, 14, 20, 29, 30, 38, 41, 66, 71

WCDMA: 1, 2, 4, 5

GSM: 850, 900, 1800, 1900

*

GSM: 900, 1800, 1900

iDEN: 800

4G LTE: 1, 2, 3, 4, 5, 7, 8, 13, 17

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

Data Technology LTE (Cat 4) LTE (Cat 6) GPRS - LTE (Cat 4)
Features 
Fingerprint Reader - Yes
stand-alone
- - -
Flashlight Yes Yes - - -
GPS / Location Yes n/a - - n/a
Ruggedized - - - - Yes
Water-Resistant - - - - Yes
IPX8 (SCUBA)
Accessibility
Adjustable Text Size Yes n/a - - n/a
Hearing Aid Compatible Yes Yes - - Yes
Multiple Languages Yes n/a Yes Yes n/a
TTY/TDD (Digital) Yes Yes - Yes Yes
Alerts
Extra Display Yes - - Yes -
Ringer Profiles - - - Yes -
Connectivity
Bluetooth Yes Yes
Classic Audio
- - Yes
Classic Audio
Mobile Hotspot - n/a - - n/a
NFC - Yes * - - Yes
USB Yes
Micro-USB
Yes
USB Type C
- - Yes
Micro-USB
Wi-Fi Yes
4 (802.11 b,g,n)
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 - Yes n/a
Customization
Custom Graphics Yes n/a Yes - n/a
Custom Ringtones - n/a Yes - n/a
Real-Music Ringers - n/a - - n/a
Data & Network
Data Tethering - n/a - Yes n/a
WAP / Web Browser Yes n/a Yes Yes n/a
Input
Predictive Text Entry Yes n/a Yes Yes n/a
Side Keys Yes Yes Yes Yes Yes
Stylus - Yes - - -
Touch Screen - Yes - - Yes
Memory
Memory Card Slot Yes Yes - - Yes
Messaging
Email Client Yes n/a - - n/a
EMS / Picture Messaging - n/a Yes - n/a
Instant Messaging Yes n/a - - n/a
MMS Yes n/a Yes - n/a
Text Messaging Templates Yes n/a Yes - n/a
Music
FM Radio Yes Yes - - Yes
Headphone Jack (3.5mm) Yes Yes - - Yes
Music Player Yes n/a - - n/a
Stereo Speakers - - - - Yes
Photo & Video
DLNA - Yes - - Yes
Miracast - - - - Yes
TV Output - - - - Yes
Power
Fast Charging - - - - Yes
Productivity
Alarm Yes n/a Yes Yes n/a
Calculator Yes n/a Yes Yes n/a
Calendar Yes n/a Yes Yes n/a
To-Do List - n/a Yes - n/a
Voice Memo Yes n/a Yes Yes n/a
Software
Games - n/a Yes Yes n/a
Java (J2ME) - n/a Yes Yes n/a
Voice
Call Screening - - - - Yes
HD Voice Yes Yes - - -
Headset Jack (2.5 mm) - n/a Yes Yes n/a
Push-To-Talk - - - Yes -
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  Nuu F4L LG Stylo 4 Samsung SGH-X640 Motorola i90c Sony Xperia Z3 Compact
  X > < X > < X > < X > < X

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

 
Phone Nuu F4L LG Stylo 4 Samsung SGH-X640 Motorola i90c Sony Xperia Z3 Compact

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