How to switch an at&t iPhone 5c to verizon?

I currently have an android phone and I'm using verizon, and my friend is using going to use her mom's iphone 5s and is going to give her iPhone 5c to me, but she uses at&t and I'm using verizon. Is there any way that I can use her phone?

IPhone 4s Stopped Making Sounds?

My iPhone 4s stopped making sounds the other day. Yesterday it turned itself off and I had to do a hard reset to get it to turn back on. For the past week it's been having little fritzes of wonky sound when opening Apps that I have the sound automatically muted on, where it'll play the sound for a second and then the volume-adjust image will appear and go muted. When I try to change the volume it gives me a picture of a bell, but none of the volume adjust bars come up and it does not say my headphones are in. It also is not in Do Not Disturb mode. My sound settings are normal, and it plays my ringtone when I adjust from the settings, but will not play any sound otherwise. I updated it to 9.1 about a month ago and it's been much slower since, as well.

Is it weird for me to keep a diary/journal/whatever?

I find it helps me vent feelings, I can't stop. Ever since a was a little girl I've kept a diary on and off but I find I ALWAYS have to write my feelings down- mainly my confusion and grimness pretty much any feeling when I'm upset, but also when I'm excited I like to write and kinda doodle just a bit. For awhile when I got my first iPhone I stopped and I just started writing notes, but somehow my notes ended up piping up in my friends I phone in his note section i don't know how I guess the phone I gave him was connected by my Apple ID i don't know but it was happening so I stopped I've been hiding my feelings in a notebook and I feel very uncomfortable with the fact that if somebody finds it they will be able to read it so it makes me wonder- why the **** write them down if you don't want anyone to see them.
I've come to the conclusion that I simple can't stop writing but does anyone else do this. I feel childish keeping a diary, is it mentally unhealthy? Is it weird I'm 17 and am keeping a diary goin on Almost 18

How to fix my iPhone 6 charger?

The metal piece on my lighting cable that plugs into my phone snapped off while I was sleeping. I wanted to know if this is fixable or do I just have to get a whole new cable entirely.