Mobile broadband refers to wireless internet access through portable devices like modems, phones, and laptops. It uses wireless networks like 3G, 4G, and satellite to allow internet connectivity anywhere. The GSM Association promotes building mobile broadband directly into laptops. While speeds can be high, coverage limitations and network capacity can impact actual speeds experienced by users. Mobile broadband subscription grew rapidly in the 2010s, reaching over 500 million users, and is projected to double to 1 billion users.