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Phone Samsung Galaxy Ring / Prevail 2 Nokia 6650 fold Nokia Lumia 521 / 520 Motorola Defy (2010)
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 4" diag.
5 : 3
2.2" diag.
4 : 3
4" diag.
5 : 3
3.6" diag.
16 : 9
Display Resolution & Type 480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
480 x 854 pixels
(~272 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz ? ? 60 Hz
Battery 1,750 mAh 1,500 mAh 1,430 mAh 1,540 mAh
Processor 1.4 GHz Qualcomm Snapdragon S2 MSM8655 369 MHz ARM 11 1 GHz Qualcomm Snapdragon S4 MSM8270 800 MHz TI OMAP3610
RAM 1 GB ? 512 MB ?
Storage 4 GB ? raw hardware 8 GB ? raw hardware
Main Camera 5 megapixel 2 megapixel 5 megapixel 5 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture 720p HD QVGA (320 x 240) 720p HD ?
Front Camera 1 megapixel - - -
Weight 3.4 oz
(96g)
3.95 oz
(112g)
4.39 oz
(124g)
4.16 oz
(118g)
Dimensions 4.83" x 2.48" x 0.47"
(123 x 63 x 11.9 mm)
3.93" x 1.86" x 0.64"
(100 x 47 x 16.2 mm)
4.72" x 2.52" x 0.39"
(120 x 64 x 9.9 mm)
4.21" x 2.32" x 0.53"
(107 x 59 x 13.4 mm)
Platform / OS Android S60 (Symbian) Windows Android
Network Bands

CDMA: 800, 850, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

*

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

WCDMA: 1, 4, 5

GSM: 850, 900, 1800, 1900

Data Technology EVDO rA HSDPA 3.6 HSPA+ 21 HSPA 7.2
Features 
Ruggedized - - - Yes
Accessibility
Hearing Aid Compatible Yes Yes Yes -
TTY/TDD (Digital) Yes - Yes Yes
Alerts
Extra Display - Yes - -
Ringer Profiles - Yes - -
Connectivity
Bluetooth Yes Yes Yes Yes
USB Yes Yes
Micro-USB
Yes Yes
Micro-USB
Wi-Fi Yes
4 (802.11 a,b,g,n)
- Yes Yes
4 (802.11 b,g,n)
Input
Side Keys Yes Yes Yes Yes
Touch Screen Yes - Yes Yes
Memory
Memory Card Slot Yes Yes Yes Yes
Music
FM Radio - - - Yes
Headphone Jack (3.5mm) Yes - Yes Yes
Photo & Video
DLNA Yes - - Yes
Voice
Speaker Phone Yes Yes Yes Yes
  Samsung Galaxy Ring / Prevail 2 Nokia 6650 fold Nokia Lumia 521 / 520 Motorola Defy (2010)
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung Galaxy Ring / Prevail 2 Nokia 6650 fold Nokia Lumia 521 / 520 Motorola Defy (2010)

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