Mobile broadband is fast becoming an alternative to WiFi connection. It allow you to connect almost anywhere where there is a mobile phone signal plus it's cheaper since most carriers now offer unlimited data connection with their monthly plans. Maybe that's why Sony Ericsson has been churning out mobile broadband devices such as the SOny Ericsson MD400g.
The Sony Ericsson MD400g is the first USB HSPA modem with an M2 Memory stick micro and MicroSD slot plus a built-in GPS. You can download any GPS tracking software and your laptop will be converted into a navigation device. This is the more portable option rather than buying the Sony Ericsson EC400g. Compatible networks include: HSPA/UMTS 850/1900/2100 MHz and EDGE/GPRS bands 850/900/1800/1900 MHz.