Won't give me the option?

How do I set a letter password on my iPhone, I've looked on google and it's shown me to turn on simple passcode but it doesn't give me that option.

I can't connect to iCloud. What do I do?

I have an iPhone 6s that's running the latest iOS version (10.3.3), and it won't let me connect to iCloud. Every time I try to sign in, it gives me a "Could not sign in. There was a problem connecting to the server." error. How do I fix this?

How do I download apps on my iPhone?

Every time I try to download FREE apps on my iPhone it tells me that I need to put in my billing information. It's only started doing this recently and I'm 16 so I don't have a credit/debit card so I don't know what to do about this.

How do i take all info of my iPhone 5s?

Hi so I'm thinking about selling my iPhone 5s to someone but i need to take all my information off such as iCloud information? I don't want who ever gets my phone to be able to see everything so how can i get it all of? If anyone knows please leave step by step how to do it.

Iphone 6 Wi-Fi problem?

I'm starting to get a little pissed. I've had my iphone 6 for 2 years now and it always worked fine, but within the past month its suddenly started to have a lot of problems. First it stopped recognizing the charger and then yesterday it wouldn't turn on at all so I had to leave it off for 5 hours and then try to charge it again. And then today i woke up and the internet doesn't work at all. Its connected to my router and the router is working, so its definitely a problem with the phone. Even when I left my house with my phone and it switched to the LTE, I still couldn't use the internet. Usually the box for vpn pops up next to the Wi-Fi signal and that lets me know if the internet is working but it hasn't shown up at all today. What should I do? I've tried everything in this youtube video and nothing worked.

I can't update my phone to ios 10 because when I connect it to my computer, itunes says that I don't have enough space on my phone. The update takes 700 mb and I only have 350 mb to spare

Why is the iPhone SE is on the bottom of the compatibility chart? Read more?

So I looked at the compatibly chart for iOS 11 and I saw the iPhone SE and I noticed it on the bottom on top of the iPhone 5s. Why is that? Are they going to drop support for the SE before the iPhone 6s? Like come on it just came out last year. The iPhone 5c received the same amount of updates as the 5. I don't understand because my SE is plenty fast.

Added (1). like it has the A9 chip and that came out in 2015 https://www.apple.com/...1-preview/