I had a iPhone 6 for two years and in those two years.
I almost never had a single problem with it with the exception that it had to go in for a repair once because it wouldn’t switch on but I think it’s just because the battery was just extremely flat and my charger didn’t want to make a good contact with the charging block.
I now own a Samsung Galaxy S7, I have only had it for two weeks but I am already getting rid of it to go back to iPhone and back onto the IOS operating system because I like it so much so this is just my opinion but I think iPhone and the IOS operating system are way more unique than the generic Android operating system. I would strongly recommend anyone to get an iPhone if money is not an issue and you are looking for a strong, solid phone that won’t give you any problems unless handled incorrectly.