I am using it on M3Note, it gets very hot as I am in Mumbai and the temp reaches to around 38 I had to use handsfree as I cannot use the earpiece as it burns the ear while I am walking on the streets in the afternoon, but if u r in a ac room will not cause any problem. Google paid apps not recognized, I had to downgrade to 6.1.0.0A and installed all paid app and then again upgrade to 6.3.0.2A. Google contacts not syncing in clean install we have to manually allow all the apps to read contacts and all other things. Battery drains a lot.