Sorry for the delayed reply. I don't have that phone anymore. I think I restored it with anycut that was a long time ago so I don't really recall. this looks familiar tho...
http://androidforums.com/lg-esteem/469807-unable-connect-mobile-network-no-4g.html#post3705510
http://androidforums.com/lg-esteem/469807-unable-connect-mobile-network-no-4g.html#post3705510
