I have a Samsung Galaxy J510-MN (Latin American version) which I have bought from Mexico (Android 6.0.1). Now, I returned to Germany and put a German SIM Card (Fonic/o2). I get network connection, phone and SMS function works. But, I can't get mobile data. I do have the card charged and I already got mobile data settings sent to my phone by phonic, but still it doesn't connects. How can I solve this? Or might it be a hardware problem, e.g. my phone can't receive the frequency they used in Germany?