I don't know if U consider the Sony VGN-U8G a Pocket PC.
Is it possible to connect it to Umts and GPRS networks? I don't think it has a Sim card or PCMCIA slot. You don't have W Lan everywhere
Pocket PC is trademarked to a Windows Mobile device but don't worry. Sony VGN-U8G is a sub-notebook with a USB 2.0 slot so you simply need a cable to the appropriate phone or a BT dongle to a BT enabled phone.