What you prefer? Big screen or Small one

All up to you... Some prefer bigger screens, some smaller. The bigger ones screen have a higher chance to shatter if they are dropped. The bigger ones are more comfortable playing games, watching videos or doing work. Smaller ones have less attention from the people around you. Smaller ones fit better in small pockets. Bigger ones are better for texting (if your fingers are bigger).Smaller ones are easier to use with one hand. I prefer the bigger ones (iphone 6s+) since I do watch a lot of videos on YouTube and sometimes anime. And I have fairly big fingers, so it's easier to text. Buy what you want, though if you haven't had a big screen smart phone it might be hard to get used to it. But over time you will get used to it and you will most likely like it.