Its really a great phone with great specs ptovided by lenovo in this price range like it has 2gb ram, 16 gb internal and a snapdragon processor and beleive me it has got a great sound effect and beside it has dolby atmos which makes you listen music through earphones awesome.It also has dual speakers.But it has got heating effect, actually heating arises in every smartphone at this price range.So no need to worry for that