Samsung SGH-I747 Mobile tethering not working
I have a unlocked Samsung SGH-I747 from ATT its mobile data tethering is not working. Error message "Mobile data is not available or invalid SIM" appears. I have rooted the phone with SUPERSU. I am a amateur at this I rooted the phone following instructions on youtube and xdadevelopers. Its working fine otherwise.
Could someone help? I don't have internet at home and want to use the simcard to connect. I am using a simcard that allows tethering on a normal smartphone. No problem with the simcard.
Thank you for your help.