Questions: Technology & Internet

Guys,

My brother is going to be 12 and I want to offer him an iPhone because he’s really into having one.
I don’t want people to say he’s too young to have an iPhone. I don’t care, he’s sweet and only his happiness matters.
As he is still young, he has little hands and he is still a little clumsy 😳😳
I was thinking about iPhone 6S or the iPhone SE. So,
Which one for a 12 years old?

Of those who have flip/slide phones, it seems like they are failing in terms of: calls not going through, white screen and texts taking hours--if not days to get to the receiving end. Is there a reason this is happening? I'm not talking about NEW flip phones, necessarily either... I'm talking about those from like '03-'07 or a bit later but not current times. Of you who have a flip/slide phone in 2018, once it "breaks" on you, will you get a smart phone to replace it? Are they becoming obsolete? Note; I had a Nokia flip phone from 2012-2016... but it was from 2004 (Someone gave it to me)! It lasted about 12 years in total until the white screen phenomena occurred! In that respect; do you guys think that flip phones were more durable than smart phones?