What's wrong with my lock button?

I have an iPhone and I've ha it for a really long time, but two maybe three days ago my lock button stopped working. Like I don't know I think it's not pushing in enough but I can't make it go in. I took it to the apple store and the guy was like "oh I see the problem." -he didn't tell me what the problem was though- and he also said I could trade it in there or wait for my upgrade -nobody had time for that- an that there was also a thing you could go into your settings and make a lock screen on your home screen to press but I can't find it. This is driving me crazy to have to sit and wait and wait for it to lock plus I can't take screen caps. So is there's a way to fix my lock button or does anyone know how to find the little touch screen lock?

Where can I find a cheap unlocked iPhone 4S?

I DESIRE an iPhone 4S, however, I'm not interested in paying the ridiculous monthly data fees. I found out that if I can get an unlocked iPhone, I can get unlimited data, text, and talk from Straight Talk Sim for just $45/month. I searched eBay and Craigslist, and all iPhones 4S's are around $400. Any suggestions where I can find a new unlocked iPhone 4S for around $200-300? Preferably 16GB

Added (1). Or an AT&T iPhone

How to take data from my current iphone to my new iphone?

I just bought a new iphone and i want to take all my data off my old iphone and put it on my new one. The problem is my computer crashed so i had to get a new computer. I already downloaded itunes on my new computer but i don't know how to get all my music back into itunes nor do i know how to put it on my new iphone.someone please please help!

What's wrong with my iMessage/emojis?

I'm chatting with my friend on iMessage. We both have the iPhone 4S with the emoji app, but I can't see her emojis. It just reads "?=?" The text bubbles are also green instead of blue. What can I fix?

Violet light on my picture What does it mean?

Okay so yesterday on the 24th of Dec, My boyfriend and i went outside to get away from the party we had at our house, he took a picture of me with his iphone Of me i was on a sexy pose on his Motorcycle he took several pictures of me and then we saw them It cought our eye that the very first picture had some sort of violet light like the whole picture no no no it wasn't taken on instagram or had any boho type of editing, it had like 2 wiggly lines of violet on the corner of the picture and the rest like a smoke type of violet we wernt smoking out so there was no smoke can anyone explain this i don't find it creepy i just wanna know if there's any meaning to it cause i heard of the whole aura colors on pictures and angels?

Iphone 4 help, Can't export (share) mp4 videos?

I downloaded a few mp4 videos to my iphone, but i can't seem to export(share) them. They don't show up in my "video" folder, but if i search the phone for "videos" a video app shows up with the vidoes in them. I can play them but i can't do anything else.

Will T-Mobile unlock my iPhone for me?

I'm saving my money for an iPhone and i'm on T-Mobiles network and I looked everywhere on the website and I couldn't find anything about them unlocking it for you, so if someone knows if they unlock your iPhone at the store that would be helpful!

Computer not working after avast! Installation?

After my computer being slow and choppy on YouTube, I decided to download a free antivirus. I downloaded avast! Thefree version, and after redrafting my computer "to allow settings to apply" my computer turned to poop. It will start up and log onto my account, and that's about it. While it's still starting up if I click control panel or something, it will come up, not completely load, then say "not responding" regardless as to what application it is. As I'm typing this on my iPhone, it is frozen on the desktop, with the loading icon. I'm seriously stuck and have no idea what to do. Can someone please help!