 Other countries have plans that charge a fixed rate per data transferred—per megabyte or even kilobyte of data downloaded; this tends to add up quickly in today's content-filled world, which is why many people are pushing for flat data rates.The faster data rates of the newest wireless modem technologies (UMTS, HSPA, EVDO, WiMax) are also considered to be "broadband wireless modems" and compete with other broadband modems below.Until the end of April 2011, worldwide shipments of USB modems surpassed embedded 3G and 4G modules by 3