Guys, great day for you, I need help with information, I'm from Brazil, and I don't have much support from Xiomi here, my phone is a little x3 NFC, but it doesn't open the front camera and we've already done everything, things like downgrading, using alternative cameras and nothing works, can you guide me, I'm in a hurry for this phone and it's never broken, never fallen and never been for technical assistance. Could someone help me?