With their huge data transmission capacities, broadband WLANs--when combined with mobile phones--compensate for the low transmission speeds of mobile phones, which are expensive, slow and have small capacity. This is precisely the concept behind dual-mode: using broadband wireless networks and cellular networks to complement each other. All that's needed is a personal accessing device, and the door is opened to a vast mobile world.
擁有龐大傳輸效能的 WLAN 寬頻無線區域網路和行動電話網路匯流後，彌補了行動電話傳輸不足、又貴又慢容量又小的缺點，正是所謂的「雙網」概念：利用無線寬頻網路和行動電話彼此互補，再配上一個個人隨身裝備，就成了自由進出廣大行動世界的鑰匙。