What happened to my personal hotspot?

I used to have it but now it's gone. It won't show up in my cellular thing, it was usually right below it.
My phone is iPhone 5s
How can I get my personal hotspot back? Thank you!
God bless. What happened to my personal hotspot - 1

How does iTunes on the Apple Watch work?

Bluetooth? Some exclusive iPhone 5 thing. I know it's only used to store music. But how is the music put on to the watch and how is the navigation of the music connected to the iPhone?

Added (1). Bluetooth? Some exclusive iPhone 5 thing? I know it's only used to store music. But how is the music put on to the watch and how is the navigation of the music connected to the iPhone?

Iphone can't check mail server has failed?

It is an iPhone 4S
It has been working fine for two years
But started having problem Friday
Can't send pics by text either. Is there something wrong with server? I have done some research and deleted 200 emails. That wasn't the problem.

IPhone 5 fell in toilet. Am I SOL?

So being the genius I'm, I dropped my iPhone 5 in the toilet. I immediately took it out and dried it off. I played around on it to see if everything was okay. I even called my sister and the speakers sounded off. Everything else was fine and it is now in rice. I'd say it took me about 15 minutes to get it in rice, but I shut it off in about 3 mins. Am I SOL? Will it be okay?