Over time each of these issues were addressed and the agreement with Starbucks in late 2000 signaled a maturing of the marketplace.[2] American Airlines also entered into an agreement with MobileStar[3] as did Hilton Hotels[4] As more laptop vendors included integrated 802.11 wireless connectivity within their laptops, users came to expect broadband connectivity in their residences, workplaces, and in public locations such as airports, coffee shops, and hotels. License-free broadband connectivity exploded with the advent of the iPhone in 2007, further validating the premise that license-free spectrum could open up a large domain of connectivity at a cost far less than licensed spectrum. The rise of voice over IP (VOIP) communications operating on the 2.4 MHz spectrum via the 802.11 standard was another indicator of the power of ubiquitous, low to no cost wireless broadband communications.