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Phone Samsung Omnia i910 Samsung Restore M570 / Profile / M575 Samsung Galaxy A21 Samsung SCH-A990
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 3.2" diag.
5 : 3
2.4" diag.
4 : 3
6.5" diag.
20 : 9
?
Display Resolution & Type 240 x 400 pixels
(~146 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~167 ppi)
LCD (TFT/TFD)
720 x 1600 pixels
(~270 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ?
Battery 1,440 mAh 1,160 mAh 4,000 mAh 1,000 mAh
Processor 624 MHz Marvell PXA312 ? 2 GHz MediaTek Helio P35 (MT6765) ?
RAM ? ? 3 GB ?
Storage 8 GB ? raw hardware 32 GB ? raw hardware
Main Camera 5 megapixel 2 megapixel 16 megapixel 3 megapixel
Wide Camera - - 8 megapixel -
Tele Camera - - - -
Video Capture VGA (640 x 480) QCIF (176 x 144) 1080p HD ?
Front Camera - - 13 megapixel -
Weight 4.16 oz
(118g)
4.43 oz
(126g)
6.81 oz
(193g)
4.4 oz
(125g)
Dimensions 4.4" x 2.24" x 0.51"
(112 x 57 x 13 mm)
4.58" x 2.1" x 0.62"
(116 x 53 x 15.7 mm)
6.61" x 3.02" x 0.32"
(168 x 77 x 8.1 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
Form Factor Slab Slab Slab Clamshell
Platform / OS Windows Mobile Professional (proprietary) Android (proprietary)
Network Bands

CDMA: 850, 1900

CDMA: 850, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 20, 25, 26, 28, 38, 39, 40, 41, 66, 71

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

Data Technology EVDO rA EVDO r0 LTE (Cat 6) EVDO r0
Features 
Fingerprint Reader - - Yes
stand-alone
-
Flashlight Yes - Yes Yes
GPS / Location n/a Yes n/a Yes
Accessibility
Adjustable Text Size n/a - n/a -
Hearing Aid Compatible Yes
M4 (very compatible)
Yes
M4, T3 (mostly tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
Yes
M3 (mostly compatible)
Multiple Languages n/a Yes n/a Yes
TTY/TDD (Digital) Yes Yes Yes Yes
Alerts
Extra Display - - - Yes
Connectivity
Bluetooth Yes Yes Yes Yes
NFC - - Yes -
USB Yes Yes
Micro-USB
Yes
USB Type C
Yes
Wi-Fi Yes
802.11 b,g
- Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID n/a Yes n/a Yes
Ringer ID n/a Yes n/a Yes
Voice Dialing n/a Yes n/a Yes
Customization
Custom Graphics n/a Yes n/a Yes
Custom Ringtones n/a Yes n/a Yes
Real-Music Ringers n/a Yes n/a Yes
Data & Network
Data Tethering n/a Yes n/a Yes
WAP / Web Browser n/a Yes * n/a Yes
Input
Predictive Text Entry n/a Yes n/a Yes
Side Keys Yes Yes Yes Yes
Stylus Yes - - -
Text Keyboard, Hardware - Yes - -
Touch Screen Yes - Yes
Capacitive
-
Memory
Memory Card Slot Yes Yes Yes Yes
Messaging
Email Client n/a Yes * n/a -
EMS / Picture Messaging n/a - n/a Yes
Instant Messaging n/a - n/a -
MMS n/a Yes n/a Yes
Text Messaging Templates n/a Yes n/a Yes
Music
FM Radio Yes - - -
Headphone Jack (3.5mm) - Yes Yes -
Music Player n/a Yes n/a Yes
Stereo Speakers - - - Yes
Photo & Video
DLNA Yes - - -
TV Output Yes - - Yes
Power
Fast Charging - - Yes -
Productivity
Alarm n/a Yes n/a Yes
Calculator n/a Yes n/a Yes
Calendar n/a Yes n/a Yes
To-Do List n/a - n/a -
Voice Memo n/a Yes n/a Yes
Software
BREW n/a Yes * n/a Yes
Games n/a Yes n/a Yes
Java (J2ME) n/a Yes * n/a -
Voice
HD Voice - - Yes -
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  Samsung Omnia i910 Samsung Restore M570 / Profile / M575 Samsung Galaxy A21 Samsung SCH-A990
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Phone Samsung Omnia i910 Samsung Restore M570 / Profile / M575 Samsung Galaxy A21 Samsung SCH-A990

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