Not always. I've owned far more Androids for longer periods of time than iPhone, but I always return to iPhone as I find it more efficient and reliable. The last Samsung was my S7 that randomly wiped out my appointments and I missed a doctors appointment because of it. I've been back on iOS ever since.
The S8 is beautiful, but I'm not willing to change back again after so many previous frustrations.
A good friend of mine had is iPhone start wiping contacts, reminders and calenders for absolutely no reason. **** happens on both platforms.
I have had far more iPhones replaced to due to defects than Android phones. 3 iPhone 5, 2 iPhone 5s, 1 replacement for iPhone 6. Only ever bought one note 5, one HTC 10, one honor 8, one Galaxy s6 edge, one axon 7, one mate 9, one LG v20, and my s8+ is flawless. Most everyone i know with iPhone has had to have something fixed with it or replaced due to manufacturer defect.