I purchased this phone at 2nd sale in feb 2015, from that time actually I dindn’t face any major issue with this phone.
But some time phone lags when I got this device the default Rome was cm.11 and that rom run petty well but after updating it to lollipop the battery drains too fast as compare to kitkat and after your team and cyanogen team released android lollipop 5.1 cm12.1 and after updating to cm12.1 the problems which earlier was there in cm12 has resolved as I have experienced. The camera of phone is good in daylight , music quality via headset is just awesome but make sure you have good qality headset. And overall iam happy with yureka.