my phone don't lock when it press on lock button

[kashilachu]

Please help

[Aashish]

Have you set a locking method first?

[kashilachu]

I make that but it doesn't working

[Anonymous]

do your phone have power button malfunction like a broken key or lose power ribbon cable if yes then get it checked via service center 

[kashilachu]

it works when charging and it does not working in another situation

[Anonymous]

then o would suggest you reset the phone at once