Problem downloading iOS 8.4.1?

I'm trying to update my software on my iPhone 5s and I'm trying to install iOS 8.4.1 but it just keeps saying an error occurred? I'm connected to internet and my phone is fully charged so what could be he problem?

How to cut iMessage off for a specific contact?

My friend has an iPhone but she doesn't have Wi-Fi and no data but I don't know how to cut iMessage off so I can regular text her I'm not smart when it comes to phones… Anyways can someone guide me?

How to get my iPhone to connect with my computer?

I have connected my iPhone before on this laptop… I've even had this same problem but my phone would be charging. So I looked up how to fix it and it was fine up until now. My phone won't even charge when I plug it into my
Laptop let alone recognize it. I tried the way I fixed it before but I guess it doesn't apply.

IPhone 6 got wet, turned itself off, but is not hot, what should i do?

So my kayak turned over and my iPhone got wet. I took it out and as I was trying to turn it off it froze then turned off. I tried to dry it off and get the water out of the cavities, and now it is front of a fan. I didn't put it in rice because I heard that's a myth. It is not hot to the touch and was never hot, so that is a good sign. Does anyone have any personal experience with this or know what to do?

Bought more storage, iPhone not using it?

I bought 20GB of iCloud storage last night and backed it up today but still it won't let me even take a picture or get a new app because "there's no storage." That doesn't make sense. What do I do?

Added (1). Do I have to manually move things into the cloud or will it do it automatically?