[Q] Any way to turn make AT & T HTC one x tether / wireless

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http://forum.xda-developers.com – I have an AT&T HTC unlocked phone. I wanted to share the 3 G connection on it with my computer. When I set up 3 G and turn on wireless hotspot, I get a message "There is a temporary network problem that prevents the enablement of the mobile hotspot function. Please retry later". Rebooting , changing SIM with another 3 G provider doesn't help. I tried the same operation with USB tethering with similar results. Can anyone please provide help? Thanks (HowTos)