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Phone Samsung SGH-X640 LG Stylo 4 ZTE Blade Z Max Nokia 2651
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 6.2" diag.
18 : 9
6" diag.
16 : 9
?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
1080 x 2160 pixels
(~390 ppi)
LCD (TFT/TFD)
1080 x 1920 pixels
(~367 ppi)
LCD (TFT/TFD)
128 x 128 pixels
LCD (STN)
Display Refresh ? 60 Hz 60 Hz ?
Battery 800 mAh 3,300 mAh 4,080 mAh 760 mAh
Processor ? 1.8 GHz Qualcomm Snapdragon 450 1.4 GHz Qualcomm Snapdragon 435 (MSM8940) ?
RAM ? 2 GB * 2 GB ?
Storage ? raw hardware 32 GB * 32 GB ? raw hardware
Main Camera Yes 13 megapixel 16 megapixel -
Wide Camera - - - -
Tele Camera - - - -
Video Capture - 1080p HD 1080p HD -
Front Camera - 5 megapixel 8 megapixel -
Weight 3 oz
(85g)
6.07 oz
(172g)
6.58 oz
(186g)
3.4 oz
(96g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
6.31" x 3.06" x 0.33"
(160 x 78 x 8.4 mm)
6.51" x 3.28" x 0.33"
(165 x 83 x 8.3 mm)
3.35" x 1.81" x 0.9"
(85 x 46 x 22.9 mm)
Form Factor Clamshell Slab Slab Clamshell
Platform / OS (proprietary) Android Android (proprietary)
Network Bands

GSM: 900, 1800, 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

*

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

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

GSM: 850, 1900

Data Technology GPRS LTE (Cat 6) LTE (Cat 6) GPRS
Features 
Fingerprint Reader - Yes
stand-alone
Yes
stand-alone
-
Flashlight - Yes Yes -
Accessibility
Hearing Aid Compatible - Yes
M4, T3 (mostly tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
-
Multiple Languages Yes n/a n/a Yes
TTY/TDD (Digital) - Yes Yes -
Connectivity
Bluetooth - Yes Yes -
NFC - Yes * - -
USB - Yes
USB Type C
Yes
USB Type C
-
Wi-Fi - Yes
5 (802.11 a,ac,b,g,n)
Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID Yes n/a n/a -
Ringer ID Yes n/a n/a -
Customization
Custom Graphics Yes n/a n/a Yes
Custom Ringtones Yes n/a n/a Yes
Data & Network
WAP / Web Browser Yes n/a n/a Yes
Input
Predictive Text Entry Yes n/a n/a Yes
Side Keys Yes Yes Yes -
Stylus - Yes - -
Touch Screen - Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot - Yes Yes -
Messaging
Email Client - n/a n/a Yes
EMS / Picture Messaging Yes n/a n/a Yes
MMS Yes n/a n/a Yes
Text Messaging Templates Yes n/a n/a -
Music
FM Radio - Yes Yes -
Headphone Jack (3.5mm) - Yes Yes -
Photo & Video
DLNA - Yes - -
Power
Fast Charging - - Yes -
Productivity
Alarm Yes n/a n/a Yes
Calculator Yes n/a n/a Yes
Calendar Yes n/a n/a Yes
To-Do List Yes n/a n/a -
Voice Memo Yes n/a n/a -
Software
Games Yes n/a n/a Yes
Java (J2ME) Yes n/a n/a Yes
Voice
HD Voice - Yes Yes -
Headset Jack (2.5 mm) Yes n/a n/a -
Speaker Phone Yes Yes Yes -
  * Some versions only
  Samsung SGH-X640 LG Stylo 4 ZTE Blade Z Max Nokia 2651
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Phone Samsung SGH-X640 LG Stylo 4 ZTE Blade Z Max Nokia 2651

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