My Wifi calling automatically turns on when I go to a public hotspot (as long as I have the wifi calling function turned on). I don't have to go through the "internet agreement." Because of this feature I talked alot of friends into going with T-mobile. However, one friend bought the Samsung Galaxy IIS with wifi calling and he has to go through the internet "agreement" page EVERYTIME. In addition, because its a public hotspot, he gets booted out every so often and he needs to sign on again! I NEVER have to go through the agreement page and I NEVER get booted off even if I went home and came back the next day to the hotspot. Can someone clarify why my HTC sensation with wifi calling is able to do this and others can't? Also, will the most recent system optimization update screw up this function?