I am a loyal user of Samsung and my last five phones were Samsung. I bought the Galaxy S7 edge, which was great, until it died three weeks later! I was plugged in to the original fast charger adapter and after charging for a while, the phone became really hot. Then the whole display froze and I could not reboot or soft reset or hard reset. Brought to the Samsung service centre and they admitted it was a hardware failure and needed to replace some parts. Best part is.. They don't have the parts to replace!*
My advice - it's a great phone but don't buy it just yet. Wait for them to fix the initial issues. And if you have bought it, DO NOT use the fast charging as it will toast your phone and battery.*Apparently the OVERHEATING ISSUE is a common problem.