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Phone Samsung SGH-X640 Nokia 6650 fold LG Stylo 4 Samsung Jack i637
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 2.2" diag.
4 : 3
6.2" diag.
18 : 9
2.4" diag.
4 : 3
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
1080 x 2160 pixels
(~390 ppi)
LCD (TFT/TFD)
320 x 240 pixels
(~167 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ?
Battery 800 mAh 1,500 mAh 3,300 mAh 1,480 mAh
Processor ? 369 MHz ARM 11 1.8 GHz Qualcomm Snapdragon 450 ?
RAM ? ? 2 GB * ?
Storage ? raw hardware ? raw hardware 32 GB * ? raw hardware
Main Camera Yes 2 megapixel 13 megapixel 3 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - QVGA (320 x 240) 1080p HD ?
Front Camera - - 5 megapixel -
Weight 3 oz
(85g)
3.95 oz
(112g)
6.07 oz
(172g)
3.6 oz
(102g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.93" x 1.86" x 0.64"
(100 x 47 x 16.2 mm)
6.31" x 3.06" x 0.33"
(160 x 78 x 8.4 mm)
4.4" x 2.4" x 0.5"
(112 x 61 x 12.7 mm)
Form Factor Clamshell Clamshell Slab Slab
Platform / OS (proprietary) S60 (Symbian) Android Windows Mobile Standard
Network Bands

GSM: 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 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

*

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

Data Technology GPRS HSDPA 3.6 LTE (Cat 6) HSDPA 3.6
Features 
Fingerprint Reader - - Yes
stand-alone
-
Flashlight - - Yes -
GPS / Location - n/a n/a n/a
Accessibility
Hearing Aid Compatible - Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
Yes
M3 (mostly compatible)
Multiple Languages Yes n/a n/a n/a
TTY/TDD (Digital) - - Yes -
Alerts
Extra Display - Yes - -
Ringer Profiles - Yes - Yes
Connectivity
Bluetooth - Yes Yes Yes
NFC - - Yes * -
USB - Yes
Micro-USB
Yes
USB Type C
Yes
Wi-Fi - - Yes
5 (802.11 a,ac,b,g,n)
Yes
802.11 b,g
Contacts
Picture ID Yes n/a n/a n/a
Ringer ID Yes n/a n/a n/a
Voice Dialing - n/a n/a n/a
Customization
Custom Graphics Yes n/a n/a n/a
Custom Ringtones Yes n/a n/a n/a
Real-Music Ringers - n/a n/a n/a
Data & Network
Data Tethering - n/a n/a n/a
WAP / Web Browser Yes n/a n/a n/a
Input
Predictive Text Entry Yes n/a n/a n/a
Side Keys Yes Yes Yes Yes
Stylus - - Yes -
Text Keyboard, Hardware - - - Yes
Touch Screen - - Yes
Capacitive
-
Memory
Memory Card Slot - Yes Yes Yes
Messaging
Email Client - n/a n/a n/a
EMS / Picture Messaging Yes n/a n/a n/a
Instant Messaging - n/a n/a n/a
MMS Yes n/a n/a n/a
Text Messaging Templates Yes n/a n/a n/a
Music
FM Radio - - Yes -
Headphone Jack (3.5mm) - - Yes -
Music Player - n/a n/a n/a
Photo & Video
DLNA - - Yes -
Productivity
Alarm Yes n/a n/a n/a
Calculator Yes n/a n/a n/a
Calendar Yes n/a n/a n/a
To-Do List Yes n/a n/a n/a
Voice Memo Yes n/a n/a n/a
Software
Games Yes n/a n/a n/a
Java (J2ME) Yes n/a n/a n/a
Voice
HD Voice - - Yes -
Headset Jack (2.5 mm) Yes n/a n/a n/a
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  Samsung SGH-X640 Nokia 6650 fold LG Stylo 4 Samsung Jack i637
  X > < X > < X > < X

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

 
Phone Samsung SGH-X640 Nokia 6650 fold LG Stylo 4 Samsung Jack i637

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