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Phone Samsung Galaxy Fold Samsung SCH-A530 Microsoft Surface Duo 2 Motorola Charm
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 7.3" diag.
4 : 3
? 8.3" diag.
4 : 3
2.8" diag.
4 : 3
Display Resolution & Type 1536 x 2152 pixels
(~362 ppi)
AMOLED
128 x 160 pixels
LCD (STN)
2688 x 1892 pixels
(~396 ppi)
AMOLED
320 x 240 pixels
(~143 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz ? 90 Hz 60 Hz
Battery 4,380 mAh ? 4,449 mAh 1,170 mAh
Processor 2.8 GHz Qualcomm Snapdragon 855 ? Qualcomm Snapdragon 888 720 MHz TI OMAP3410
RAM 12 GB ? 8 GB ?
Storage 512 GB ? raw hardware 128 GB * ? raw hardware
Main Camera 12 megapixel - 12 megapixel 3 megapixel
Wide Camera 16 megapixel - 16 megapixel -
Tele Camera 12 megapixel - 12 megapixel -
Video Capture 4K UHD - 4K UHD ?
Front Camera 10 megapixel - 12 megapixel -
Weight 9.74 oz
(276g)
3 oz
(85g)
10.02 oz
(284g)
3.88 oz
(110g)
Dimensions 6.33" x 2.47" x 0.67"
(161 x 63 x 17 mm)
3.18" x 1.67" x 0.9"
(81 x 42 x 22.9 mm)
5.72" x 3.63" x 0.43"
(145 x 92 x 11 mm)
3.87" x 2.65" x 0.45"
(98 x 67 x 11.4 mm)
Form Factor Foldable Clamshell Unique Slab
Platform / OS Android (proprietary) Android Android
Network Bands

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 34, 38, 39, 40, 41, 46, 66, 71

WCDMA: 1, 2, 4, 5

GSM: 850, 900, 1800, 1900

*

CDMA: 850, 1900

5G: 1, 2, 3, 5, 7, 20, 25, 28, 38, 41, 66, 71, 77-C, 78, 257, 260, 261

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 46, 48, 66, 71

WCDMA: 1, 2, 5, 8

GSM: 850, 900, 1800, 1900

WCDMA: 4

GSM: 850, 900, 1800, 1900

*

Data Technology LTE (Cat 18) 1xRTT NR (5G) HSDPA 3.6
Features 
Barometer Yes - - -
Fingerprint Reader Yes
stand-alone
- Yes
stand-alone
-
Flashlight Yes - Yes -
GPS / Location n/a Yes n/a n/a
Accessibility
Hearing Aid Compatible Yes
M4, T3 (mostly tele-coil compatible)
- Yes
M3, T3 (mostly tele-coil compatible)
-
Multiple Languages n/a Yes n/a n/a
TTY/TDD (Digital) Yes - - Yes
Alerts
Extra Display Yes Yes - -
Connectivity
Bluetooth Yes - Yes Yes
MirrorLink Yes - - -
NFC Yes - Yes -
USB Yes
USB Type C
- Yes
USB Type C
Yes
Micro-USB
Wi-Fi Yes
6 (802.11 a,ac,ax,b,g,n)
- Yes
6 (802.11 a,ac,ax,b,g,n)
Yes
4 (802.11 b,g,n)
Contacts
Picture ID n/a Yes n/a n/a
Ringer ID n/a Yes n/a n/a
Voice Dialing n/a Yes n/a n/a
Customization
Custom Graphics n/a Yes n/a n/a
Custom Ringtones n/a Yes n/a n/a
Real-Music Ringers n/a - n/a n/a
Data & Network
Data Tethering n/a Yes n/a n/a
Dual-SIM Yes - Yes -
WAP / Web Browser n/a Yes n/a n/a
Input
Predictive Text Entry n/a Yes n/a n/a
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - - - Yes
Touch Screen Yes
Capacitive
- Yes
Capacitive
Yes
Capacitive
Memory
Memory Card Slot - - - Yes
Messaging
Email Client n/a - n/a n/a
Instant Messaging n/a - n/a n/a
MMS n/a - n/a n/a
Music
Headphone Jack (3.5mm) - - - Yes
Music Player n/a - n/a n/a
Stereo Speakers Yes - Yes -
Photo & Video
Miracast - - Yes -
TV Output Yes - Yes -
Power
Fast Charging Yes - Yes -
Wireless Charging Yes - - -
Productivity
Alarm n/a Yes n/a n/a
Calculator n/a Yes n/a n/a
Calendar n/a Yes n/a n/a
To-Do List n/a Yes n/a n/a
Voice Memo n/a Yes n/a n/a
Software
BREW n/a Yes n/a n/a
Games n/a Yes n/a n/a
Voice
HD Voice Yes - Yes -
Headset Jack (2.5 mm) n/a Yes n/a n/a
Speaker Phone Yes - Yes Yes
  Samsung Galaxy Fold Samsung SCH-A530 Microsoft Surface Duo 2 Motorola Charm
  X > < X > < X > < X

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

 
Phone Samsung Galaxy Fold Samsung SCH-A530 Microsoft Surface Duo 2 Motorola Charm

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