If you're interested in Sprint's $15 unlimited plan but haven't yet signed up, you'd better act fast.

Sprint has confirmed that it will stop offering its $15 unlimited plan offer this Friday, June 15th, at 11:59 pm ET. The carrier cited heavy demand as the reason for ending this deal one week after it launched. 

Sprint's $15 unlimited plan offers unlimited talk, text, and data for just $15 per month. It does require you to port in a number and sign up for a new line of service, and you'll need to either bring your own phone or buy a new device outright, too, along with enrolling in autopay.

It's also worth noting that customers on this plan will be limited to 480p video streaming, 500kbps music streaming, and 2Mbps game streaming. Customers will also be subject to data deprioritization during times of network congestion.

Despite those restrictions, Sprint's $15 unlimited plan is a pretty great deal. Unlimited plans from major carriers can cost several times that price per month, so if you qualify for it, this deal is definitely one to consider.