Sprint decided to pull out of providing 4G WiMax service on the Blackberry PlayBook tablet, leaving the tablet with no support from a U.S. carrier. 

"We apologize for any inconvenience but the BlackBerry 4G PlayBook Tablet that was announced in January for summer availability will no longer be coming to the Sprint network," Sprint said in a statement.

The reasons Sprint cited to change its decision are that the device hasn't yet won over consumers, and there are too few tablets on the market currently that it will create confusion, according to wSJ.

"It's an interesting concept, it just hasn't caught on with business customers as much as they would like" said Sprint's business markets group president Paget Alves.

However, Sprint will continue to carry the wi-fi version of the PlayBook in stores, which currently sells for $499.99.