My iphone 6 freeze again

my iphone 6 freeze again.when the first time it happened i restore my phone & update it via itunes.I've already spend $100 to fix this problem but now it's happening again.I'm using IOS 9.3.4 version.Can anybody please tell me what the **** is wrong with iphone 6.again every time i tried to restart my phone it only shows the ******' apple logo on a black screen & than nothing.Please help me,I'm fade up with this ****.😠😠😠