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Phone Samsung SGH-X640 Samsung Galaxy S8+ Samsung SGH-R225 / SGH-R225M Siemens A56 / A56i Motorola One Zoom
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 6.2" diag.
18.5 : 9
? ? 6.4" diag.
19.5 : 9
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
1440 x 2960 pixels
(~531 ppi)
AMOLED
128 x 64 pixels 101 x 64 pixels 1080 x 2340 pixels
(~403 ppi)
AMOLED
Display Refresh ? 60 Hz ? ? 60 Hz
Battery 800 mAh 3,500 mAh ? 700 mAh 4,000 mAh
Processor ? 2.3 GHz Qualcomm Snapdragon 835 (MSM8998) ? ? Qualcomm Snapdragon 675
RAM ? 4 GB ? ? 4 GB
Storage ? raw hardware 64 GB ? raw hardware ? raw hardware 128 GB
Main Camera Yes 12 megapixel - - 12 megapixel
Wide Camera - - - - 16 megapixel
Tele Camera - - - - 8 megapixel
Video Capture - 4K UHD - - 4K UHD
Front Camera - 8 megapixel - - 25 megapixel
Weight 3 oz
(85g)
6.1 oz
(173g)
3.35 oz
(95g)
3 oz
(85g)
6.7 oz
(190g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
6.28" x 2.89" x 0.32"
(160 x 73 x 8.1 mm)
4.33" x 1.81" x 0.93"
(110 x 46 x 23.6 mm)
4" x 1.7" x 0.8"
(102 x 43 x 20.3 mm)
6.22" x 2.95" x 0.35"
(158 x 75 x 8.8 mm)
Form Factor Clamshell Slab Slab Slab Slab
Platform / OS (proprietary) Android (proprietary) (proprietary) Android
Network Bands

GSM: 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 40, 41, 66

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

*

GSM: 900, 1900

GSM: 850, 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

Data Technology GPRS LTE (Cat 16) - - LTE (Cat 12)
Features 
Fingerprint Reader - Yes
stand-alone
- - Yes
in-display (optical)
Flashlight - Yes - - Yes
GPS / Location - n/a - Yes n/a
VR-ready - Yes - - -
Water-Resistant - Yes
IPX8 (SCUBA)
- - Yes
Accessibility
Hearing Aid Compatible - Yes - - Yes
Multiple Languages Yes n/a Yes - n/a
TTY/TDD (Digital) - Yes - Yes Yes
Alerts
Ringer Profiles - - - Yes -
Connectivity
Bluetooth - Yes - - Yes
MirrorLink - Yes - - -
NFC - Yes - - Yes
USB - Yes
USB Type C
- - Yes
USB Type C
Wi-Fi - 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 Yes n/a
Customization
Changeable Body Plates - - - Yes -
Custom Graphics Yes n/a Yes Yes n/a
Custom Ringtones Yes n/a Yes Yes n/a
Data & Network
Data Tethering - n/a Yes - n/a
Dual-SIM - - - - Yes
WAP / Web Browser Yes n/a - Yes n/a
Input
Predictive Text Entry Yes n/a Yes Yes n/a
Side Keys Yes Yes - - Yes
Touch Screen - Yes - - Yes
Memory
Memory Card Slot - Yes - - Yes
Messaging
EMS / Picture Messaging Yes n/a - Yes n/a
MMS Yes n/a Yes - n/a
Text Messaging Templates Yes n/a Yes - n/a
Music
FM Radio - - - - Yes
Headphone Jack (3.5mm) - Yes - - Yes
Power
Fast Charging - Yes - - Yes
Wireless Charging - Yes - - -
Productivity
Alarm Yes n/a Yes Yes n/a
Calculator Yes n/a Yes Yes n/a
Calendar Yes n/a Yes - n/a
To-Do List Yes n/a - - n/a
Voice Memo Yes n/a - - n/a
Software
Games Yes n/a Yes Yes n/a
Java (J2ME) Yes n/a - - n/a
Voice
HD Voice - Yes - - Yes
Headset Jack (2.5 mm) Yes n/a Yes - n/a
Speaker Phone Yes Yes - - Yes
  Samsung SGH-X640 Samsung Galaxy S8+ Samsung SGH-R225 / SGH-R225M Siemens A56 / A56i Motorola One Zoom
  X > < X > < X > < X > < X

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

 
Phone Samsung SGH-X640 Samsung Galaxy S8+ Samsung SGH-R225 / SGH-R225M Siemens A56 / A56i Motorola One Zoom

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