I keep messing with compiz and in order to make Unity look better I often happen to make it worse. To get it back in its original setting, I use this command in terminal:
Unity --resetIt takes sometime (seems never ending to me) and a restart after that (I do not wait for it to show that the reset has been completed) takes Unity back in it’s default setting.
This trick works with most of the Nokia phones but exceptions may be there. It most likely won’t work for the newer phones like the Lumia 710 or the Windows phone. By this method you can get the master code of the Nokia phone. These master codes are unique for each phone and can be used in place for the security / phone code. This way if you have forgotten your Security code then you can reset it with this Master code. Following are the steps:
Supported Nokia Phones: 2100, 3110, 3210, 3310, 3315, 3330, 3350, 3390, 3410, 3610, 5110(i), 5130, 5190, 5210, 5510, 6080, 6110, 6130, 6138, 6150, 6190, 6210, 6250, 7110, 8210, 8250, 8290, 8850, 8855, 8890, 9110(i), 9210(i), 9290, 3100(b), 3108, 3120, 3200(b), 3220, 3230, 3300, 3360, 3510(i), 3530, 3590, 3595, 3600, 3650, 3660, 5100, 5140(i), 6020, 6021, 6100, 6101, 6108, 6200, 6220, 6230(i), 6260, 6310(i), 6500, 6510, 6590, 6600, 6610(i), 6620, 6650, 6800, 6810, 6820, 6822, 7200, 7210, 7250(i), 7260, 7270, 7280, 7600, 7610, 7650, 7700, 7710, 8310, 8390, 8800, 8910(i), 9300(i), 9500, N-Gage (QD).
P.S. It doesn’t unlock the PIN code.