How to open galaxy duos closed by pin?

my samsung DUOS GT-7562 is not working by the methods you gave me above. what shall i do please help me.  

... code. Switch ON your Samsung Galaxy S duos with a NOT ACCEPTED SIM Card ... 's being displayed on your Samsung Galaxy Note 4G. Compose : #0111*CODE ...  

thanks.. network data mode worked for me....  

i press the volume up+down+home+power button but did not open the restart option  

Thanks a lot. Data network option worked for me and not lost any data. Thanks ...  

Too many pattern attempt in Samsung Galaxy S Duos GT-S7562, Forgot gmail Password,i tried above steps but sill showing same screen after the restart. what can i do please help me......  

thank u very much.. through data network mode procedure is worked out for me...  

switch off your mobile and press volume up + power on button, then select Wipe data/Factory Reset enter ok..then select reboot device, now your mobile will be restart, after this your mobile will be ...  

thank u very much dear when data network enabled by using power on button my phone unlocked b  

Hi All, There is another way you can try out without wiping data/factory reset. If your sim card has access to Mobile data(2G or 3G enabled), press hold the power button and you will see the ...  

... connection and it will send a PIN to that email account; but ... connection to send the recovery PIN you will need to factory ...