I know it isn't the same carrier/model/OS, but I stopped using 7.1 on my 9900 (on T-Mobile). You need a Hotspot add-on ($20/month) and I think I pay them more than enough money know. Something to look at next year. Also, the WiFi dialing was blocked for outbound calls (an "issue" per my friends at T-mobile). I'll wait for the released version.
Who am I kidding. The next leak will go on. I was running 7.1.0.115 but I'm back onto 7.0.whoknows.