Default Unable to establish a wireless data connection (no data signal)

I'm currently abroad and so I unlocked my phone with ODIN but there was no way for me to verify if it was unlocked or not (I still do now know if it is).

I have a sim card in there for a data only plan but whenever I get off wifi to connect to data I get the error

"unable to establish a wireless data connection

LTW: ESM -29 -EMM -x"

also there is a circle with a line through it where my signal bars are supposed to be. I've set my APN settings, and I am not sure which network settings I should be using. I also am unsure if this it do to it not actually being unlocked.