mobile hotspot not working on t-mobile 9900
i installed the 7.1 leaked os onto my tmobile 9900. when i try to use mobile hotspot, my playbook routes me to a tmobile page that then wants me to sign up for the mobile hotspot feature. am i missing something? or will i have to oay a fee for this feature? kindof annoying that mobile hotspot feature is standard on some android devices.
i know there are a few posts on here about this, but the answer is different fir each carrier and each thread gets sidetracked in 5 different directions. just want a straight answer that applies to tmo users.