How to download 4shared.com app files to my iPhone 3G?

How do I download 4shared.com app files to my iPhone 3G? I have a iPhone 3G running on 4.2.1 and it is jailbroken. I have iFile downloaded and I can't download the Facebook app or instagram app because I need iOS 4.3 so I have to download them from 4shared.com because you can't get installous or anything like that off of cydia because they shut down.

Siri problems what should i do?

I jailbroken iPhone 4 iOs 6.0.1 and added siriport.ru as source to install Siri. After I installed Siri, *** was going down. From time to time the iPhone kept going into Safe Mode and said "SpringBoard has crashed." and I decided to uninstall Siri. After that the iPhone started restarting itself and now it just won't open. I press the "on/off" button and the Apple logo keeps appearing on the screen for like 10 minutes and then the iPhone shuts down but then starts back up and the apple logo is still there. What can I do?

How to put videos on my iPhone?

I transferred the videos from my camera onto my laptop but I can't put then in iTunes so I can't put them on my iPhone. How do I do it?

Do all celebrities have iPhones?

Okay it just seems like all celebrities have iPhones. Before it used to be the Blackberry lol. Do you agree? I mean I don't blame them, purchasing an iPhone was the best decision I ever made.

Why does my iphone not record much sound?

I make videos on my phone and you can berly hear what I say how can I fix it like my music and everything else sounds good but when I record a video you can berly hear anything

APN settings in IOS 6? (iphone 4)?

I'm having trouble sending/receiving pictures on my iphone. There's a red exclamation mark when I try to send my pictures and I don't ever receive pics sent to me. I reset the Network Settings but nothing happened. I don't know how to adjust the apn and other settings in order to get the mms to work. The phone is not unlocked though. It's an at&t phone and I'm using an at&t sim. Also, where can I get the APN information for at&t?

Can't sign into my new Twitter account with my iPhone or iPad?

Long story short, made a twitter account and I was able to sign into my twitter at first from my iPhone and iPad. I'm currently on my laptop because my iPhone & iPad are not letting me log in since I logged out about half an hour ago?

Could this just be because I'm a new account to Twitter. Because I signed in with an old account of mine and it worked perfectly fine?

No words come up, I simply try to sign in and it doesn't say anything like "Log in error", it just refreshes itself back to the sign in page without telling me what is wrong.

Please help? Thank you!

Forgot to add it is the website I'm trying to log on to. Don't have the app, had problems with it before on my old twitter account. My safari is fine apart from that one thing.

I found an IPhone 4, how do I unlock it to find out the who the owner is?

I was walking in the park, and I found a white IPhone 4 on the ground. But it has a lock on it. So I was wondering how I can unlock the phone to find out who the owner is and return it?

Cheers (:

Added (1). UPDATE,

Thanks for the answers,

I have had this IPhone in my possession since last Friday (almost a week), and no one has called or texted the phone since,

Handing it into the Police was an idea, but my friend said that he handed a phone into the police, but they just kept it and didn't try to contact the real owner.

I've already plugged it into my computer and opened ITunes, but I still can't access it. A message pops up saying that I need to enter the passcode on the phone to access it on the computer.

Any more ideas?

Added (2). UPDATE 2,

I have managed to access the phone via a couple of wild guesses at the code! Crazy I know!

Turns out I've stumbled across a completely blank IPhone 4S! No contacts, pictures, music.

And in addition there's no SIM.