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Phone Samsung Galaxy Ring / Prevail 2 Samsung Glyde U940 Coolpad Quattro 4G Samsung SCH-A990
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 4" diag.
5 : 3
2.8" diag.
16.5 : 9
4" diag.
5 : 3
?
Display Resolution & Type 480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
240 x 440 pixels
(~182 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
Display Refresh 60 Hz ? 60 Hz ?
Battery 1,750 mAh 1,000 mAh 1,600 mAh 1,000 mAh
Processor 1.4 GHz Qualcomm Snapdragon S2 MSM8655 ? ? ?
RAM 1 GB ? ? ?
Storage 4 GB ? raw hardware 512 MB ? raw hardware
Main Camera 5 megapixel 2 megapixel 3 megapixel 3 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture 720p HD QVGA (320 x 240) VGA (640 x 480) ?
Front Camera 1 megapixel - Yes -
Weight 3.4 oz
(96g)
4.2 oz
(119g)
3.31 oz
(94g)
4.4 oz
(125g)
Dimensions 4.83" x 2.48" x 0.47"
(123 x 63 x 11.9 mm)
4.09" x 1.98" x 0.71"
(104 x 50 x 18 mm)
4.96" x 2.6" x 0.51"
(126 x 66 x 13 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
Form Factor Slab Slide Slab Clamshell
Platform / OS Android (proprietary) Android (proprietary)
Network Bands

CDMA: 800, 850, 1900

CDMA: 850, 1900

4G LTE: 2, 4

CDMA: 850, 1700, 1900

CDMA: 850, 1900

Data Technology EVDO rA EVDO r0 LTE (Cat 3) EVDO r0
Features 
Flashlight - - - 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 (very 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
Mobile Hotspot n/a - n/a -
USB Yes Yes Yes Yes
Wi-Fi Yes
4 (802.11 a,b,g,n)
- Yes -
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
Text Keyboard, Hardware - Yes - -
Touch Screen Yes
Capacitive
Yes Yes
Capacitive
-
Memory
Memory Card Slot Yes Yes Yes Yes
Messaging
Email Client n/a - 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
Headphone Jack (3.5mm) Yes - Yes -
Music Player n/a Yes n/a Yes
Stereo Speakers - - - Yes
Photo & Video
DLNA Yes - - -
TV Output - - - Yes
Productivity
Alarm n/a Yes n/a Yes
Calculator n/a Yes n/a Yes
Calendar n/a Yes n/a Yes
Voice Memo n/a - n/a Yes
Software
BREW n/a Yes n/a Yes
Games n/a Yes n/a Yes
Voice
Headset Jack (2.5 mm) n/a Yes n/a -
Speaker Phone Yes Yes Yes Yes
  Samsung Galaxy Ring / Prevail 2 Samsung Glyde U940 Coolpad Quattro 4G Samsung SCH-A990
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Phone Samsung Galaxy Ring / Prevail 2 Samsung Glyde U940 Coolpad Quattro 4G Samsung SCH-A990

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