Hii friends ivam using lenovo k4 note mobile actually it’s good for multi tasking I used feel satisfie with any app while I was using but when I installed skype application in my mobile It’s getting hanged out because it’s occuipieds more space in mobile.it is dificult than any application using. If you see there are many applications like IMO, WHATS APP those are have same features as well as skype now a days we fully satisfy with any application except skype.when I started to call in skype there is no clearence in skype. And voice calls also so according to it is waster than any other applicatios Thank you.