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Phone Samsung SGH-X640 CAT S48c LG Optimus Zone
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size ? 5" diag.
16 : 9
3.2" diag.
4 : 3
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
1080 x 1920 pixels
(~441 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~125 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz 60 Hz
Battery 800 mAh 4,000 mAh 1,540 mAh
Processor ? 2.2 GHz Qualcomm Snapdragon 630 800 MHz Qualcomm Snapdragon S1 MSM7625A
RAM ? 4 GB 512 MB
Storage ? raw hardware 32 GB 4 GB
Main Camera Yes 13 megapixel 3 megapixel
Wide Camera - - -
Tele Camera - - -
Video Capture - 4K UHD VGA (640 x 480)
Front Camera - 5 megapixel -
Weight 3 oz
(85g)
9.1 oz
(258g)
3.88 oz
(110g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
5.9" x 3" x 0.5"
(150 x 76 x 12.7 mm)
4.04" x 2.42" x 0.47"
(103 x 61 x 11.9 mm)
Form Factor Clamshell Slab Slab
Platform / OS (proprietary) Android Android
Network Bands

GSM: 900, 1800, 1900

4G LTE: 2, 3, 4, 5, 7, 12, 13, 14, 25, 26, 41, 66

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

Data Technology GPRS LTE (Cat 13) EVDO rA
Features 
Flashlight - Yes -
GPS / Location - n/a n/a
Ruggedized - Yes -
Water-Resistant - Yes
IPX8 (SCUBA)
-
Accessibility
Hearing Aid Compatible - Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4 (very compatible)
Multiple Languages Yes n/a n/a
TTY/TDD (Digital) - Yes Yes
Connectivity
Bluetooth - Yes Yes
NFC - Yes -
USB - Yes
USB Type C
Yes
Micro-USB
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
Voice Dialing - n/a n/a
Customization
Custom Graphics Yes n/a n/a
Custom Ringtones Yes n/a n/a
Real-Music Ringers - n/a n/a
Data & Network
WAP / Web Browser Yes n/a n/a
Input
Predictive Text Entry Yes n/a n/a
Side Keys Yes Yes Yes
Touch Screen - Yes
Capacitive
Yes
Capacitive
Memory
Memory Card Slot - Yes Yes
Messaging
Email Client - n/a n/a
EMS / Picture Messaging Yes n/a n/a
Instant Messaging - n/a n/a
MMS Yes n/a n/a
Text Messaging Templates Yes n/a n/a
Music
FM Radio - Yes -
Headphone Jack (3.5mm) - Yes Yes
Music Player - n/a n/a
Power
Fast Charging - Yes -
Productivity
Alarm Yes n/a n/a
Calculator Yes n/a n/a
Calendar Yes n/a n/a
To-Do List Yes n/a n/a
Voice Memo Yes n/a n/a
Software
Games Yes n/a n/a
Java (J2ME) Yes n/a n/a
Voice
HD Voice - Yes -
Headset Jack (2.5 mm) Yes n/a n/a
Push-To-Talk - Yes -
Speaker Phone Yes Yes Yes
  Samsung SGH-X640 CAT S48c LG Optimus Zone
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Phone Samsung SGH-X640 CAT S48c LG Optimus Zone

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