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Phone Samsung SGH-X640 Motorola One Zoom ZTE Grand X
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size ? 6.4" diag.
19.5 : 9
5" diag.
16 : 9
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
1080 x 2340 pixels
(~403 ppi)
AMOLED
540 x 960 pixels
(~220 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz 60 Hz
Battery 800 mAh 4,000 mAh 2,300 mAh
Processor ? Qualcomm Snapdragon 675 1.2 GHz Qualcomm Snapdragon 200 MSM8210
RAM ? 4 GB 1 GB
Storage ? raw hardware 128 GB 4 GB
Main Camera Yes 12 megapixel 5 megapixel
Wide Camera - 16 megapixel -
Tele Camera - 8 megapixel -
Video Capture - 4K UHD 720p HD
Front Camera - 25 megapixel 1 megapixel
Weight 3 oz
(85g)
6.7 oz
(190g)
6.06 oz
(172g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
6.22" x 2.95" x 0.35"
(158 x 75 x 8.8 mm)
5.7" x 2.87" x 0.37"
(145 x 73 x 9.4 mm)
Form Factor Clamshell Slab Slab
Platform / OS (proprietary) Android Android
Network Bands

GSM: 900, 1800, 1900

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

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

Data Technology GPRS LTE (Cat 12) HSPA+ 21
Features 
Fingerprint Reader - Yes
in-display (optical)
-
Flashlight - Yes -
GPS / Location - n/a n/a
Water-Resistant - Yes -
Accessibility
Adjustable Text Size - n/a n/a
Hearing Aid Compatible - Yes
M4, T4 (very tele-coil compatible)
Yes
M3, T3 (mostly tele-coil 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
Dual-SIM - Yes -
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 Yes
Headset Jack (2.5 mm) Yes n/a n/a
Speaker Phone Yes Yes Yes
  Samsung SGH-X640 Motorola One Zoom ZTE Grand X
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Phone Samsung SGH-X640 Motorola One Zoom ZTE Grand X

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