No LTE After Patch Certificate / IMEI Repair – HELP URGENT

Hello, I have done the imei repair for the n920t, & patch the certificate. Everything works good, the only thing with the problem is the LTE is not working.
I am currently using t-mobile and it’s only showing 4g data. Anyone can help me out with this.
Android Verizon : 5.1.1
Basband Version: N920TUVU2COJ5