It can use the native app for tethering. It enables tethering even with Entitlement is checked. There's no Entitlement APN. I use 3845#*920# > Connectivity Test > uncheck Entitlement before I use the native tethering app. I disable Entitlement just to be on the safe side even though there's no Entitlement APN. I used to xshortcut to make a short cut for the Connectivity Test and the native tethering app when I was using the stock Froyo and GingerBread ROM. Now it doesn't work anymore with this ROM.