Will NEVER buy a Samsung phone again

I have my Samsung Galaxy S4 for 18months. Since then I had to take my phone in 2 times.<br> First time : The phone just went of and didn't want to turn on again.<br> Second Time : The ******** just stopped working.<br> <br> Now I have 2 issues<br> First issue is the phone refreshes like every 5minutes. So the screen just goes on by itself.<br> Second issue is when people try to call me, they get my voicemail, but my phone is turned on and 5min later they try again then my phone rings. VERY irritating.<br> <br> I am not going to take my phone in for repairs,because both times it took longer than 6 weeks to get it back again. I think its time for a LG, iPhone of HTC One