How to master reset Nokia lumia 520

Nokia is the most popular brand of the world.Till now nokia has made many model handset .Maximum phone has been popular.But Nokia windows phone has been more popular.Nokia windows phone have more advance feature so Its may be systemless for wrong operating.When a phone   has systemless then need master reset Now I showing How to master reset Nokia lumia 520 phone.

At first we will know details of nokia lumia 520

Processor	Dual-core 1 GHz
Ram	512mb
Internal memory Memory card support	8Gb 64GB
Sim	Micro sim One sim
Display	IPS LCD capacitive touchscreen, 16M colors 480 x 800 pixels, 4.0 inches (~233 ppi pixel density)
Software platform	Windows Phone 8
Network	850 MHz 900 MHz 1800 MHz 1900 MHz
Battery	1430.0  mAh,3.7v,BL-5J
Camera	5mp

we can Its master reset two ways

One of them:

Turn on the Nokia Lumia 520 then Go to menu: Setting > About > Reset Your Phone next give code then The process of formatting Nokia Lumia 520 will do by it self

Another of them :

Press and Hold the Power Button, do not release until the phone vibrate (if you feel the vibrate in Nokia Lumia 520 then release the Power Button)

Press and Hold the Volume Down Button, do not release until the LCD show the exclamation mark (if you see the exclamation mark in LCD, then release the Volume Down Button)

To continue reset, you have to do the last step bellow

Press Volume Up Button Key and release

Press Volume Down Button Key and release

Press Power Button Key and release

Press Volume Down Button Key and release

The the Nokia Lumia 520 will do the hard reset format