Can't sync twitter and facebook on iphone 4s?

I've read a bunch of tutorials on how to sync them and they all say to go to the profile settings in my twitter account and on the bottom it will have a Facebook tab… Yeah mine doesn't have a Facebook tab. I've tried it online and on the app and it's the same. So I tried to do it in the settings on my phone and there wasn't an option there either… Help please! I'm really frustrated.

Restore backup didn't work - Iphone 4?

I have an Iphone 4 and I wanted to sync it with a new Itunes library. So i backed it up and then synced it and it deleted all my music. Then when I restored the back up it went through with no errors, but i still didn't have my music back on my iphone or in the itunes library. Please Help I HAVE So MANY SONGS AND I CAN't REMEMBER THEM All TO RE-DOWNLOAD!

IPhone 4S iOS 7 verizon unlock

So the iPhone does include a SIM card and I want to use my at&t card but I don't know how to do so. Can I unlock it free?

IPhone 4 for a cheap price, is it a good choice over the new ones out in the market?

I'm 20, female & I really want the iPhone, I had a Samsung but it no longer works. A cousin of mine is selling an iPhone 4 for $188, all he has to do is reset it and it can pass for a completely new phone -No scratches, plastic cover still on back and front, he's only had it for 3 weeks, it's 32gb, etc.

Since it's something I can afford now I'm thinking of buying it, the reason he is selling it is because it was given to him but is thinking of getting another type of phone.

Since I haven't had an iPhone I don't know if buying the 4 is a good idea since there are newer versions in stores (which I can't afford at the time of course} I would mostly use the phone for the regular such as calling, texting every now and then, and photos (I take a lot of pictures}.

But I don't know much about Apple and the way it works when it comes to their older phones, does the 4 receive the same kind of software updates as the rest? Or is it no longer taken into consideration?

I Took the City bus about 3 days ago and found an iphone4 on one of the seats

Just out of Being Bored i was trying to guess the password. Pressing random numbers, then out of nowhere the phone said "iphone disabled". The phone seems pretty cool, but is it basically useless now? It disabled cause i failed to enter the corect password for about like 6 tries. Now i know people hack these things but is it really possible to hack this one?

Added (1). i figured turning the phone in would be the proper idea but i had it for a while and no one has came to pick it up and how do i know who's it is if i can't even get in it because it says disabled

Selling and buying iPhone's Apple ID Activation Lock?

So I've gotten into the business of buying broken iPhone's and fixing them for profit. I've studied quite a lot and read 2 books on iPhone's and now decently knowledgeable about them now. Anyways I have a question about the Apple ID activation lock.

I just received a iPhone and its unlocked and working 100% fine (after I fixed the Wi-Fi antenna). Its running a iOS 6.0.0. I want to update it to a most recent one, but pretty sure every iPhone has a apple ID lock on it. I bought the phone from America (I live in Canada) off eBay.

1. Does every single iPhone require you to enter a apple ID activation after updating/restoring, or is there a way to bypass it and have the phone permanently unlocked from ever having to enter the apple ID after updating/restoring?

2. When the phone is accessible and working fine, how can you replace the existing apple ID on the iPhone with your own without the password of the previous apple ID?

3. Can you factory restore the iPhone like its just came out of the box? Like make it work as if there has never been an apple ID on the phone?

Just need this information so I don't run into trouble when i sell the phone to someone and in the future they complain to me that they can't access their phone because they have a apple ID on it to update it.

If your in the market of buying and selling iPhone's, could you please let me know what you do?