My iPhone 5s has a very bad crack?

And my warranty period us up. What should I do? Should I replace, upgrade my phone(my warranty is up) or should I replace the screen?

StraightTalk carrier updates?

After updating my iPhone I started getting a pop-up asking to update me carrier settings? If I click for it to update will it ruin my service?

Why won't my pictures sync from my pc to my iphone 6?

Why won't my pictures sync from my pc to my iphone 6? - 1

Added (1). I'm trying to transfer pictures from an iphone 4 to iphone 6. I've tried icloud, it doesn't work (it won't upload) So I downloaded all my pictures from my iphone 4 to my pc and connected my iphone 6 to my pc. I clicked on the photos tab for my iphone 6 on itunes and it says that iclouds is connected and won't let me sync my pictures onto my phone. This is really frustrating, please help

Not receiving a specific text?

I own an iPhone 6s Plus, my boyfriend owns an LG G4. He sent me a rather lengthy message, and I wasn't able to receive it but I received smaller texts claiming he sent the message. Any reasons as to why I can't receive long messages?

Music stops when I exit app?

So I'm using the playtube app (let's you listen to videos from YouTube without data or Wi-Fi) on my iPhone 6 and every time I exit the app the music cuts out. I have an iPhone 5s with the same app and it works just fine.

If I double click the home button and all the apps show up the music will continue to play.
Need help please!

How to restore a backup from an iphone 6 to an iphone 4?

My iphone 6 had been water damaged and is no unusable. I had recently bought a used iphone 4 as a replacement. I had it activated and it is working fine. When I try to restore a recent backup of my iphone 6 to my iphone 4, it doesn't show up in the list and only shows really old backups from when I had an iphone 4S back in the day. Does anyone know of a solution to this? Tried a method that edits the info.plist. It did show up on itunes but reported an error stating corruption or incompatibility with my desired backup. Please let me know, thanks!

Is it easier to repair Iphone 4s Screen or Replace it?

I shattered my friend's Iphone 4 screen and I don't think she has insurance on it. Is it cheaper to replace her screen or buy a new iphone?

Added (1). Is it Easer to Repair Iphone 4 screen or replace the phone itself?