Tethering question. AT&T use to charge for any tethering and why I have been using FoxFi/PdaNet for some time and it works well. There are several places I go to that don't have connections, such as a few relatives that don't have internet and while my wife is driving on trips, so it is handy. My question is I notice the S5 has "Mobile Hotspot". I had unlimited plan with ATT and was only using 3GB/month so we consolidated my family's mobile plan to ATT shared 15GB plan. Unlimited calling, text. Can we now use mobile hotspot on our Samsung phones without rooting or extra fees? I don't want a "surprise" on my next bill. If so, which one is better? Thoughts?