AT&T, Verizon blocking Android Wireless Tether app; 74 percent of mobile app downloaders use Android or iOS;

> Are AT&T, Verizon blocking the Android Wireless Tether app?

> Report: 74 percent of mobile app downloaders use Android or iOS.

> Nokia outsources Symbian software development to Accenture.

> Qualcomm's Augmented Reality app platform exits beta.

> Distimo: More free apps in Android Market than App Store.

> Zynga acquires iOS game developer Wonderland Software.

> Yahoo snaps up TV check-in app developer IntoNow.

And finally... Inmate breaks up prison guard fight.