Best Buy has launched yet another iPhone trade-in special, this time only lasting a few days. The program, which lasts from today through this Sunday, allows an iPhone 4S customer to trade-up to an iPhone 5 at a minimum $200 discount and an iPhone 4 for an iPhone 5 at a minimum $100 discount. The money comes in the form of a Best Buy gift card and is exclusively for Verizon Wireless, AT&T, and Sprint on-contract iPhone 5 models. Before making any trade-in decisions ahead of Apple’s September 10 iPhone event, you’re going to want to read our extensive article about getting the most money via trade-in programs.

FAQ from Best Buy:

My iPhone 4 or iPhone 4S has a cracked screen, can I still trade it for an iPhone 5?

Devices with cracked screens are not eligible for this promotion but we would be happy to recycle your phone for free.

My iPhone 4 or iPhone 4S has water damage, can I still trade it in for an iPhone 5?

Water-damaged devices are not eligible for this promotion but we would be happy to recycle your phone for free.

I would like to trade in a non-iPhone smartphone for the iPhone 5, can I?

You can check the value of your smartphone on our trade-in site and trade in your device at a Best Buy store and use that gift card toward an iPhone 5.

What will be the trade-in value of my phone?

We have to see it in store before determining the value. You can get an estimate online.