I'm suffering from signal loss too. And I'm losing it in places with strong 4G and 3G. It will flop in and out of 4G, down to 1X or even nothing at times. Sometimes it will get stuck in 3G and even if I'm obviously in a strong 4G area it will take 10 minutes or so for it to pop back into 4G. I also had my first dropped call with the TB a couple days ago...in a place where I should have strong signal. Definitely not just a "bar" recalibration or anything, because I'm actually losing voice and data services. I never had any trouble maintaining voice and data before the update. And I've reset several times.