Default lte:esm - 29 emm - x unable to establish a wireless data connection

hey, i unlocked the phone to use in gsm networks (im outside the us) but 3g is not working, it says lte:esm - 29 emm - x unable to stablish a wireless data connection i get signal and i can make calls, but no 3g.

i set the gsm/umts mode but i still get this message when i try to use my data connection.