Hello everyone, I just want to ask if someone here also encountered this problem when taking pictures using the front camera of MI4i? I bought my phone last October 2015 and the front camera still works fine. However when I tried taking pictures again after a couple of weeks, the output photo becomes pixelated(grainy). It seems like the quality is degrading. Is this a known hardware issue or just a software bug? If it's a hardware issue, can I still get the warranty and replace the unit? Thanks!