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Phone Nokia N81 Nokia Lumia 1520 HP iPAQ hw6510 / hw6515
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size 2.4" diag.
4 : 3
6" diag.
16 : 9
?
Display Resolution & Type 240 x 320 pixels
(~167 ppi)
LCD (TFT/TFD)
1080 x 1920 pixels
(~367 ppi)
LCD (TFT/TFD)
240 x 240 pixels
LCD (TFT/TFD)
Display Refresh ? ? ?
Battery 1,050 mAh 3,400 mAh 1,200 mAh
Processor 369 MHz ARM 11 2.2 GHz Qualcomm Snapdragon 800 312 MHz Intel XScale PXA272
RAM ? 2 GB ?
Storage 8 GB * 16 GB * ? raw hardware
Main Camera 2 megapixel 20 megapixel 1 megapixel
Wide Camera - - -
Tele Camera - - -
Video Capture VGA (640 x 480) 4K UHD ?
Front Camera - 1 megapixel -
Weight 4.94 oz
(140g)
7.37 oz
(209g)
5.8 oz
(164g)
Dimensions 4.02" x 1.97" x 0.7"
(102 x 50 x 17.8 mm)
6.41" x 3.36" x 0.34"
(163 x 85 x 8.7 mm)
4.65" x 2.8" x 0.71"
(118 x 71 x 18 mm)
Platform / OS S60 (Symbian) Windows Windows Mobile Professional
Network Bands

WCDMA: 1

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 5, 7, 17

WCDMA: 1, 2, 5, 8

GSM: 850, 900, 1800, 1900

*

GSM: 850, 900, 1800, 1900

Data Technology EDGE LTE (Cat 4) EDGE
Features 
Accessibility
Hearing Aid Compatible - Yes -
TTY/TDD (Digital) - Yes Yes
Alerts
Ringer Profiles Yes - Yes
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Infrared (IR) - - Yes
NFC - Yes -
USB Yes
Micro-USB
Yes
Micro-USB
Yes
Wi-Fi Yes
802.11 b,g
Yes
5 (802.11 a,ac,b,g,n)
-
Input
Side Keys Yes Yes -
Text Keyboard, Hardware - - Yes
Touch Screen - Yes Yes
Memory
Memory Card Slot Yes * Yes Yes
Music
FM Radio Yes Yes -
Headphone Jack (3.5mm) Yes Yes -
Stereo Speakers Yes - -
Power
Wireless Charging - Yes -
Voice
Push-To-Talk Yes * - -
Speaker Phone Yes Yes Yes
  * Some versions only
  Nokia N81 Nokia Lumia 1520 HP iPAQ hw6510 / hw6515
  X > < X > < X

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

 
Phone Nokia N81 Nokia Lumia 1520 HP iPAQ hw6510 / hw6515

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