I used this phone about 1 month. It was my friend’s phone. I would like to say the performance of this device is superb and there was a very less heating issue. Fingerprint scanner works well. Gaming on this phone was excellent. And the battery backup it was just amazing. Sound output from the speaker was not too loud but was quiet ok. I am fan of this phones performance. One thing I did not like about this phone was the Camera quality It was not too great. But the front camera was good in camparision with its rear camera. One more thing that you can use 2 sim no memory card or 1 sim 1 memory card due to its hybrid slot. MIUI customization is great.