how to make mobile unreachable ?

[azzu]

guys i just consulted the IDEA CC
they told there's no out of coverage area named message but out of cov area or switched off " message in thier Database

 

[esumitkumar]

azzu bhai u rock.. ! u even cosulted CC idea .......thanks all the guys for suggestions..as of now i will try in steel almirah ...warna switch off is the best sol

 

[kkg_mjh]

I do this by going setting -- > phone setting -- > Network Selection --> chosing/selecting diffrent Service Provider then my current service provider

then when it do request I turn/switch off .
and i always do that