I thought that samsung mobiles ?? are really adorable but after samsung z2 this thinking is completely change beacuse this mobile is worst mobile ever sometimes it works for me whenever hardly needed but sometimes it realise me that I was wrong all mobikes from samung are not adorable as samsung z2. Sometimes it irritates me that I want to crush is mobile. The applications of this mobile are really bad but good with hight speed internet but whenever internet is slow all the applications acts like as, we take their life and they stop working an also offline added data is removed without internet and its display is worst sometimes its display stops working without any reason . THERE IS NO ANY GOOD APPLICATION ON TIZEN STORE . Whenever I startes to compare this mobile with any other mobile then I fond samsung z2 is worst ever. I have never seen such a worst mobile before. It really disappoint me every time.