Judging by the number of carrier-grade Wi-Fi equipment announcements during this year's Mobile World Congress trade show in Barcelona, Spain, offloading smartphone mobile data traffic onto Wi-Fi networks is becoming a key network requirement for operators around the world as they grapple with heavy data traffic. But interestingly enough, those operators that have embraced the offload concept have difficulty quantifying its ability to reduce 3G network congestion or solidly demonstrate its cost advantages. They just know it works. Check out my special report on Wi-Fi offloading here. --Lynnette
