Samsung will be releasing a touch-screen mobile Internet device in August that can take advantage of Sprint Nextel’s and Clearwire’s expanding WiMAX networks, reports InformationWeek. The Mondi has a 4.3 inch touch-screen with an 800x 480 resolution and a full slide-out QWERTY keyboard. To stay connected, the device has Wi-Fi and a WiMAX modem. The Mondi comes as Sprint and Clearwire are making a bigger push to expand their WiMAX networks before rivals begin rolling out next-generation networks based on Long-Term Evolution technology. Clearwire expects to have live WiMAX networks in about 10 major markets before the end of the year.