Nokia Lumia 520 hard reset

Nokia Lumia 520 data:

GSM frequencies :850 900 1800 1900

Standard UMTS :900 2100

Type :Touch

Dimensions (W x H x D) :119,90 x 64,00 x 9,90 mm

Weight :124,00 g

Main display :Color / IPS TFT

                     16M colors

                     480 x 800 px (4.00") 233 ppi

Talk time (max.) :2G: 888 min. (14,8 h)

                          3G: 576 min. (9,6 h)

Stand-by (max.) :3G: 360 h. (15,0 days)

Standard battery :Li-Ion 1430 mA

Internal memory :8 GB

RAM memory :512 MB

Memory cards : microSD, microSDHC, microSDXC (up to 64 GB)

Operating system :MS Windows Phone 8

Processor :Qualcomm MSM8227

Processor clock :1,00 GHz

How to hard reset:

Warning! All data will be lost!

1.Power off your phone

2.Press power button and after phone vibrates once press volume down until you will see exclamation sign on the screen

3.Press in this order:volume up

                               volume down

                               power

                               volume down

4.Wait until format ends and the phone restarts

That's it

Here is video how to do: