Both Sprint (NYSE: S) and T-Mobile USA will offer 4G-capbale tablet PCs in 2011, but the service providers are mum on any real details.

4G is the next frontier in wireless service, offering connectivity at broadband speeds.

Both already sell the Samsung “Galaxy Tab” than runs at 3G speed.

However, The Wall Street Journal reported Monday that neither Sprint nor T-Mobile USA would disclose the manufacturer of the new tablets or the operating system on which they would run.

Read the Wall Street Journal report here.

Get the latest news alerts: Follow LTW at Twitter.