when i take my unlocked (simm unlocked) galaxy s5 (was a tmobile now working on another carrier outside of the US) and setup hotspots I am able to see the hotspot on both my mac (mavericks) and windows (win 8) systems but I can not connect. Times out after I enter the password (which I know to be 100% correct). My carrier told me i should be able to use it without issue as they don't restrict any type of tethering. Only thing I can think to do is root the phone, any thoughts?