Hi. I bought my Note 5 from Malaysia in October and without using a Malaysian sim, I took my phone to India. When I inserted the Indian sim, it showed "Network sim unlock." It was requesting for some code. So I brought it back to Malaysia with me and put in a Malaysian sim and the phone worked fine. I made a couple of calls. Each one lasting about 10-15 minutes long. Thing is, if I take the phone to India now, would there be any issues? Please help. I didn't know there was such a thing that Samsung came up with.