Sim not detecting as well as no network manager option available topic

Hi guys, I bought z2 from dubai, when i came for vacation in india, it is not working as it is not taking any sim cards in india, i flashed it with al most all versions ftf but still it is not taking any sim cards. There is no (X) in sim lock but all figures are 0. When i tried to search the network mannualy, i found that there is no option for selecting network mannually. so guys please help to find a solution. How i can add the newtork manager option so that i can select network manualy