The HTC P4350 is a Pocket PC smartphone manufactured by High Tech Computer Corporation (HTC) of Taiwan. It is also known as the HTC Herald, T-Mobile Wing, and XDA Terra. An updated model running Windows Mobile 6, the HTC P4351, has been sold as the HTC Atlas. It features a right-side QWERTY slide and runs the Windows Mobile 6.0/6.1 Professional Edition operating system.