Running 4.1.2 Rooted with Safestrap on Black Widow rom. Have beed running this combination since April and has worked perfectly until last weekend. Now I cant get 4GLTE to save my life. 3G works perfectly fine. Have done hard resets, loaded stock rom and most recently got a brand new sim card. Still cant get a good 4G connection. Im lost as to what to do.

Thanks in Advance