You spent $999 on an iPhone X. Here's how much you can get for it.

Apple is expected to reveal three new iPhones at its Sept. 12 "Gather Round" event.

They're not going to be cheap — luckily, if you bought an iPhone X, you can trade it in to get cash or a gift card to put toward your new device. 

First off, you'll want to know the condition of your device, the model, and the storage size. Go to Settings > General > About to see the model number and the storage size of your iPhone. 

After that, check out the top trade-in sites to see which one will give you the best deal.

Gazelle