How to use verizon iphone on sprint network?

My iphone 5 recently crashed the other week and I've been using my dad's old phone which has a ton of problems on it already. For my birthday my friend offered me his old iphone 4 that he's not using since he upgraded to the iphone 5s so I'm wondering if I can use it on sprint. I took it to the sprint store and they told me I need to have it flashed or else they won't be able to connect to it and from what I've gathered online I have to have my friend contact Verizon to unlock the phone. Basically I'm just wondering will they unlock it for him or should I stop pursuing this.

How much would a cracked ( I think broken LCD) Iphone 5 phone go for?

I had a black 32gb iphone 5 with that I got color changed to red so both the front and the back top and bottom iphone panels are red and the middle part on the back is still black. I then very slightly cracked the front and then dropped it again and cracked the two back red panels. When I dropped it the second time I was unable to use the iphone. My background picture would come up occasionally and then fade away. I could slide to unlock on the off chance I could see my screen and when I couldn't there were just electronic lines on my screen. I tried to restart it and eventually just wanted to start over and get a brand new phone.
I just need a quote on how much I could get for it if I sell it! An iphone repair guy wants to buy it from me and offered 100$ but I feel like that is way too low.

How to transfer music to iPhone 3gs from iTunes?

I have the older iPhone 3gs and iTunes. But my itunes does not have the most recent update, it does has the one before it though. I have music on my itunes but I have no clue of how to transfer the songs to the iphone. Any ideas?

IPhone battery charge problems?

I've noticed a couple problems with my iphone 4s battery within the last couple of weeks. I fell asleep one night using my phone and it died. When I woke up and plugged it in, it took 45 minutes to charge enough to turn back on, which was only 5%. It's never taken my phone anymore than 5 minutes to charge up after dying. And just today, the charge went from 19% to 6%, and immediately after I plugged it in, it went back up to 11%.
Are there any possible fixes? I can't upgrade my phone until December and I'm not paying the full $750-$800 for a new one.

Added (1). *charge went from 19% to 6% within less than a minute

Will thieves access my data on stolen iPhone?

I recently just had my iPhone stolen on the CTA. Two kids snuck up behind me and took it out of my hands. After chasing them, they got away, and the CTA worker told me "they're are too many stolen iPhone reports for police to care". To say I was extremely upset is an understatement.
I do not have Find my iPhone turned on. So i can't erase data through there or iCloud
I do not have iCloud set up on my iPhone so they can't access photos or data through there.
I just logged out of my Facebook on my phone through my computer, and changed my password to EVERYTHING literally.
My phone has a 4 digit phone passcode.
After calling ATT my phone is now suspended.

I'm just terrified they will still be able to get in my phone and look at my information. I have information on my notes, emails linked (even though I changed my password, they could see my previous emails), and my pictures are all private. I feel my privacy is extremely violated.

What happens when a thief (two punk teenagers) steals an iPhone? How likely am I to have my phone searched?

How to wait for a package to arrive?

I ordered an iPhone 5s and it should be here Monday or Tuesday, what can I do to wait until then?
I'm bored!

Added (1). This is my first iPhone ever so it's not an upgrade.

New iTunes account and apps?

I want to make my daughter her own iTunes account. When I do, I imagine her apps will disappear when she syncs her iphone, right? My question is, when she downloads the apps again into her new account, will all her progress in games come with it since the app was already on the device? I believe the game saves are not associated with the iTunes account, but rather on the phone itself or iCloud.

FREE app for writing essays on iPad/iPhone? Emergency?

I have two papers due and my computer is absolutely destroyed. I'm already in trouble for my computer so asking my parents to pay for an app is out if the question. I just need to be able to upload it to Microsoft word when I get to school and preferably be able to know how many pages I have written, but it's not a necessity.