Jeremy Allaire writes about the impact of the arrival of Wi-Fi chipsets in mobile phones:
The two big opportunities that stem from this are:
1. VoIP/SIP stacks get put into smartphones, enabling IP-based bridging and roaming into and out of the mobile networks, also enabling coverage even in the basement of the pentagon.
2. More interestingly, I think, is that your smartphone can use 10MB (realy 4MB) of data, instead of the extremely limited 30Kbps on most GPRS connections, or even the 400Kbps on pseudo-3G.
Lots at stake for mobile carriers, potentially having a huge positive impact on their cost structure for both voice and data services, and better service options for consumers.