First smartphone was Samsung S2, I can say I hated it since 2 hours before I bought it. Ram ridiculous, frozen apps and the SIM card was offline before only 5 minutes of utilised.
iPhone 6, only before 3 years the battery died and no one problem. I changed it and before 2 years I give it to my mom perfectly working just for buy the new one XS which Im using to write this post. Still satisfied about apple