How to set up Voicemail on iPhone 4s?

I have an iphone 4s and only noticed recently that none of my calls go through to voicemail - it rings constantly until the caller hangs up.

I have gone through the set up of my greeting and PIN but it's all pointless when none of my calls actually go through to voicemail.

I have checked forums and they all seem to suggest calling my own number and then I will be given the option to set it up - however when I call my own number I get a busy tone obviously!

Can anyone help? I assume I need to store a certain number in my phone somewhere in order to actually have the voicemail option?

I have an upgrade at Verizon and i want to get the new Iphone?

So I have an upgrade at Verizon and I have been waiting to get an upgrade for the new Iphone 5 to come out. Now I'm finding out that if you want the Iphone 5 you will have the change your plan or pay 650 and keep your plan! Let's say that I get a upgrade with a different phone like the Galaxy 3, do I have to change my plan too or is that just with the Iphone or is Verizon making all costumers change over from their unlimited plans? What should I do?

What is the best overall case for your iPhone?

I like cases that are small but still protective. What is a good quality case that still maintains the iPhone's small size(not overwhelming in your pocket) but still protected, or just to keep the screen clean?

Can I put a sim card into an iPhone 3GS?

I want to buy an iPhone 3GS, and then put my sim card in it, and use it as a phone/Wi-Fi, with no data plan. Can I do this? And I have an AT&T plan, so that's obviously what my sim card is. Also, eBay gives you the option for "AT&T" and "Unlocked" Which one would I want? Oh, and my friend said that he can unlock it if I get a locked one, whatever that means.

Added (1). Also, can I send MMS messages w/o the data plan?

New iphone 3gs bricked by changing to ipad baseband - will apple be able to tell? - 1

I couldnt get it unlocked from my network so i jailbroke it and tried unlocking with ultrasn0w - at which point everything was fine but the unlock didn't work - i found online instructions saying to change the baseband…

So it has now been bricked by downgrading to ipad baseband (which shouldnt have been done as the baseband chip is not compatible)

I tried restoring using itunes and it said restore failed and now all it will do is show me the 'connect to itunes' screen.

Its brand new - Would apple replace it or will they be able to tell what I did to it?

Iphone for cricket wireless?

I've been wanting a iphone for awile now since my old one got stolen. I have Verizon. I'm gonna buy this whiteiphone 4 off craigslist. But the person says the ESN Is for cricket… I don't really understand that andits not flashed.help me understabd that… And i will switch over to cricket when i understand the whole cricket esn thing and he said the esn is good.

Added (1). My iphone was stolen 4 months ago… I currently have htc rhyme.

Can i trust ebay when buying an iPhone?

I heard craglists is not as reliable as ebay so i just want to make sure that is true. Or should I got for craigslist? The one on ebay is about 40 bucks more but that is because it was refurbished. I'm getting the 3gs if anyone was wondering. Also are refurbished products good? I want to make sure I do not waste my money. Also the person I would be buying from ebay has a top rated seller award with fast shipping etc. Can i trust it?

What Color Should I Change My iPhone 5 Backplate To?

I'm planning on buying the iPhone 5 soon and I was wondering what color should I change my backplate to? Basically what I'm asking is, what color on the back looks good with black or white on the front? I'm not completely changing the color since I don't feel like risking having my phone break when the front gets changed out.

But anyways, an easier way to ask this question is, what color backplate looks good with a white or black front on the iPhone 4S?

What is ShopCube and what can you win?

I've seen a couple of my friends like this page on ShopCube. I think it's a site where you can win prizes such as a car or iPhone but I don't know how it works. Does anyone know what ShopCube is?