Can I trade an iphone 4 in for an iphone 5 before my contract is up?

Can I trade an iphone 4 in for an iphone 5 before my 2-year contract is up? Or will I have to pay full price? I have verizon and my contract ends next july, but my phone is really slow and messing up and I don't think it will last that long.

If you don't qualify for an upgrade you have to pay full price.

The iPhone 5 was discontinued on September 10, 2013.
Some stores might have a few left. It was replaced by the iPhone 5C.

You can trade up, but you have tto pay for the upgrade.depnding on your bill and contract. They will charge you something.
call them up and ask the amout for the upgrade.clearly ask about what will be charged and can i trade my phone.
write some question in you notepad, the one you will ask. That way you will be clear and more positive.

Ask Verizon for an accurate answer.